/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 14:51:47,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 14:51:47,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 14:51:47,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 14:51:47,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 14:51:47,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 14:51:47,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 14:51:47,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 14:51:47,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 14:51:47,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 14:51:47,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 14:51:47,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 14:51:47,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 14:51:47,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 14:51:47,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 14:51:47,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 14:51:47,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 14:51:47,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 14:51:47,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 14:51:47,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 14:51:47,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 14:51:47,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 14:51:47,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 14:51:47,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 14:51:47,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 14:51:47,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 14:51:47,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 14:51:47,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 14:51:47,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 14:51:47,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 14:51:47,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 14:51:47,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 14:51:47,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 14:51:47,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 14:51:47,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 14:51:47,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 14:51:47,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 14:51:47,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 14:51:47,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 14:51:47,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 14:51:47,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 14:51:47,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 14:51:47,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 14:51:47,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 14:51:47,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 14:51:47,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 14:51:47,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 14:51:47,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 14:51:47,652 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 14:51:47,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 14:51:47,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 14:51:47,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 14:51:47,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 14:51:47,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 14:51:47,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 14:51:47,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 14:51:47,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 14:51:47,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 14:51:47,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:51:47,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 14:51:47,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 14:51:47,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 14:51:47,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 14:51:48,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 14:51:48,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 14:51:48,012 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 14:51:48,014 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 14:51:48,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-06-05 14:51:48,015 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-06-05 14:51:48,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 14:51:48,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 14:51:48,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 14:51:48,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 14:51:48,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 14:51:48,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 14:51:48,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 14:51:48,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 14:51:48,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 14:51:48,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... [2021-06-05 14:51:48,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 14:51:48,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 14:51:48,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 14:51:48,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 14:51:48,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:51:48,152 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 14:51:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 14:51:48,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 14:51:48,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 14:51:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 14:51:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 14:51:48,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 14:51:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 14:51:48,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 14:51:48,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 14:51:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 14:51:48,154 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 14:51:48,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 14:51:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 14:51:48,154 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 14:51:48,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 14:51:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 14:51:48,154 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 14:51:48,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-05 14:51:48,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-05 14:51:48,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-05 14:51:48,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 14:51:48,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 14:51:48,306 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 14:51:48,308 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:51:48 BoogieIcfgContainer [2021-06-05 14:51:48,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 14:51:48,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 14:51:48,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 14:51:48,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 14:51:48,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:51:48" (1/2) ... [2021-06-05 14:51:48,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79898031 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 02:51:48, skipping insertion in model container [2021-06-05 14:51:48,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:51:48" (2/2) ... [2021-06-05 14:51:48,314 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-06-05 14:51:48,318 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 14:51:48,319 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 14:51:48,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 14:51:48,319 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 14:51:48,477 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-05 14:51:48,495 INFO L255 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-06-05 14:51:48,510 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 14:51:48,510 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 14:51:48,510 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 14:51:48,510 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 14:51:48,510 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 14:51:48,510 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 14:51:48,510 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 14:51:48,510 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 14:51:48,519 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-06-05 14:51:48,951 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:48,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:49,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:49,041 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:49,041 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:49,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1343820696, now seen corresponding path program 1 times [2021-06-05 14:51:49,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:49,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81784723] [2021-06-05 14:51:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:49,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:49,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81784723] [2021-06-05 14:51:49,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81784723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:49,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:49,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:51:49,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618040572] [2021-06-05 14:51:49,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:51:49,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:49,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:51:49,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:49,274 INFO L87 Difference]: Start difference. First operand has 7231 states, 7229 states have (on average 3.6692488587633143) internal successors, (26525), 7230 states have internal predecessors, (26525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:49,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:49,380 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2021-06-05 14:51:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:51:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:51:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:49,442 INFO L225 Difference]: With dead ends: 5614 [2021-06-05 14:51:49,442 INFO L226 Difference]: Without dead ends: 5614 [2021-06-05 14:51:49,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:49,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-06-05 14:51:49,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-06-05 14:51:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5613 states have (on average 3.5763406378050955) internal successors, (20074), 5613 states have internal predecessors, (20074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-06-05 14:51:49,830 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-06-05 14:51:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:49,831 INFO L482 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-06-05 14:51:49,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-06-05 14:51:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:49,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:49,851 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:49,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 14:51:49,851 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash -607358788, now seen corresponding path program 2 times [2021-06-05 14:51:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:49,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009226136] [2021-06-05 14:51:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:49,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:49,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009226136] [2021-06-05 14:51:49,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009226136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:49,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:49,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 14:51:49,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577705892] [2021-06-05 14:51:49,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 14:51:49,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 14:51:49,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:49,909 INFO L87 Difference]: Start difference. First operand 5614 states and 20074 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:49,954 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2021-06-05 14:51:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 14:51:49,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:51:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:49,981 INFO L225 Difference]: With dead ends: 4822 [2021-06-05 14:51:49,981 INFO L226 Difference]: Without dead ends: 4822 [2021-06-05 14:51:49,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 14:51:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-06-05 14:51:50,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-06-05 14:51:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4821 states have (on average 3.5490562124040657) internal successors, (17110), 4821 states have internal predecessors, (17110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-06-05 14:51:50,264 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-06-05 14:51:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:50,264 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-06-05 14:51:50,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-06-05 14:51:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:50,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:50,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:50,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 14:51:50,280 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1880871100, now seen corresponding path program 3 times [2021-06-05 14:51:50,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:50,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490856744] [2021-06-05 14:51:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:50,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:50,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490856744] [2021-06-05 14:51:50,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490856744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:50,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:50,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:51:50,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933129957] [2021-06-05 14:51:50,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:51:50,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:51:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:51:50,897 INFO L87 Difference]: Start difference. First operand 4822 states and 17110 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:52,406 INFO L93 Difference]: Finished difference Result 5573 states and 19644 transitions. [2021-06-05 14:51:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:51:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:51:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:52,437 INFO L225 Difference]: With dead ends: 5573 [2021-06-05 14:51:52,437 INFO L226 Difference]: Without dead ends: 5446 [2021-06-05 14:51:52,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1029.6ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 14:51:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-06-05 14:51:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5018. [2021-06-05 14:51:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.53757225433526) internal successors, (17748), 5017 states have internal predecessors, (17748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17748 transitions. [2021-06-05 14:51:52,632 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17748 transitions. Word has length 47 [2021-06-05 14:51:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:52,633 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 17748 transitions. [2021-06-05 14:51:52,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17748 transitions. [2021-06-05 14:51:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:52,647 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:52,647 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:52,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 14:51:52,647 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:52,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1097616762, now seen corresponding path program 4 times [2021-06-05 14:51:52,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:52,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766237779] [2021-06-05 14:51:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:53,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:53,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766237779] [2021-06-05 14:51:53,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766237779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:53,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:53,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:51:53,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909483425] [2021-06-05 14:51:53,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:51:53,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:53,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:51:53,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:51:53,135 INFO L87 Difference]: Start difference. First operand 5018 states and 17748 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:55,148 INFO L93 Difference]: Finished difference Result 7632 states and 26869 transitions. [2021-06-05 14:51:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 14:51:55,149 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:51:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:55,176 INFO L225 Difference]: With dead ends: 7632 [2021-06-05 14:51:55,176 INFO L226 Difference]: Without dead ends: 7543 [2021-06-05 14:51:55,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1310.6ms TimeCoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 14:51:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2021-06-05 14:51:55,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 5222. [2021-06-05 14:51:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5221 states have (on average 3.5276766902892165) internal successors, (18418), 5221 states have internal predecessors, (18418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 18418 transitions. [2021-06-05 14:51:55,357 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 18418 transitions. Word has length 47 [2021-06-05 14:51:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:55,358 INFO L482 AbstractCegarLoop]: Abstraction has 5222 states and 18418 transitions. [2021-06-05 14:51:55,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 18418 transitions. [2021-06-05 14:51:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:55,372 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:55,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:55,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 14:51:55,373 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:55,373 INFO L82 PathProgramCache]: Analyzing trace with hash 246964854, now seen corresponding path program 5 times [2021-06-05 14:51:55,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:55,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016277230] [2021-06-05 14:51:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:55,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:55,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016277230] [2021-06-05 14:51:55,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016277230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:55,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:55,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:51:55,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821487927] [2021-06-05 14:51:55,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:51:55,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:55,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:51:55,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:51:55,673 INFO L87 Difference]: Start difference. First operand 5222 states and 18418 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:57,594 INFO L93 Difference]: Finished difference Result 8296 states and 29491 transitions. [2021-06-05 14:51:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 14:51:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:51:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:57,624 INFO L225 Difference]: With dead ends: 8296 [2021-06-05 14:51:57,624 INFO L226 Difference]: Without dead ends: 8193 [2021-06-05 14:51:57,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1108.3ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 14:51:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2021-06-05 14:51:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5210. [2021-06-05 14:51:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 5209 states have (on average 3.5288923017853713) internal successors, (18382), 5209 states have internal predecessors, (18382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 18382 transitions. [2021-06-05 14:51:57,829 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 18382 transitions. Word has length 47 [2021-06-05 14:51:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:57,829 INFO L482 AbstractCegarLoop]: Abstraction has 5210 states and 18382 transitions. [2021-06-05 14:51:57,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 18382 transitions. [2021-06-05 14:51:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:57,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:57,854 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:57,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 14:51:57,854 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:57,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1872194890, now seen corresponding path program 6 times [2021-06-05 14:51:57,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:57,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577267653] [2021-06-05 14:51:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:51:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:51:58,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:51:58,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577267653] [2021-06-05 14:51:58,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577267653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:51:58,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:51:58,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:51:58,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052099919] [2021-06-05 14:51:58,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:51:58,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:51:58,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:51:58,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:51:58,169 INFO L87 Difference]: Start difference. First operand 5210 states and 18382 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:51:59,707 INFO L93 Difference]: Finished difference Result 6915 states and 24041 transitions. [2021-06-05 14:51:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 14:51:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:51:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:51:59,731 INFO L225 Difference]: With dead ends: 6915 [2021-06-05 14:51:59,731 INFO L226 Difference]: Without dead ends: 6778 [2021-06-05 14:51:59,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 929.4ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 14:51:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-06-05 14:51:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5402. [2021-06-05 14:51:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.517867061655249) internal successors, (19000), 5401 states have internal predecessors, (19000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 19000 transitions. [2021-06-05 14:51:59,880 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 19000 transitions. Word has length 47 [2021-06-05 14:51:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:51:59,880 INFO L482 AbstractCegarLoop]: Abstraction has 5402 states and 19000 transitions. [2021-06-05 14:51:59,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:51:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 19000 transitions. [2021-06-05 14:51:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:51:59,892 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:51:59,892 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:51:59,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 14:51:59,892 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:51:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:51:59,893 INFO L82 PathProgramCache]: Analyzing trace with hash 443897944, now seen corresponding path program 7 times [2021-06-05 14:51:59,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:51:59,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556794235] [2021-06-05 14:51:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:51:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:00,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:00,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556794235] [2021-06-05 14:52:00,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556794235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:00,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:00,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:52:00,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857176235] [2021-06-05 14:52:00,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:52:00,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:00,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:52:00,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:52:00,192 INFO L87 Difference]: Start difference. First operand 5402 states and 19000 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:01,904 INFO L93 Difference]: Finished difference Result 7850 states and 27581 transitions. [2021-06-05 14:52:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 14:52:01,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:01,926 INFO L225 Difference]: With dead ends: 7850 [2021-06-05 14:52:01,926 INFO L226 Difference]: Without dead ends: 7761 [2021-06-05 14:52:01,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1073.2ms TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 14:52:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2021-06-05 14:52:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 5406. [2021-06-05 14:52:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 3.5167437557816834) internal successors, (19008), 5405 states have internal predecessors, (19008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 19008 transitions. [2021-06-05 14:52:02,082 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 19008 transitions. Word has length 47 [2021-06-05 14:52:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:02,082 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 19008 transitions. [2021-06-05 14:52:02,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 19008 transitions. [2021-06-05 14:52:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:02,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:02,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:02,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 14:52:02,094 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash -406753964, now seen corresponding path program 8 times [2021-06-05 14:52:02,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:02,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410728313] [2021-06-05 14:52:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:02,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:02,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410728313] [2021-06-05 14:52:02,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410728313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:02,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:02,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:52:02,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687893899] [2021-06-05 14:52:02,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:52:02,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:02,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:52:02,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:52:02,407 INFO L87 Difference]: Start difference. First operand 5406 states and 19008 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:04,161 INFO L93 Difference]: Finished difference Result 8217 states and 29113 transitions. [2021-06-05 14:52:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 14:52:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:04,186 INFO L225 Difference]: With dead ends: 8217 [2021-06-05 14:52:04,186 INFO L226 Difference]: Without dead ends: 8086 [2021-06-05 14:52:04,187 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1069.5ms TimeCoverageRelationStatistics Valid=275, Invalid=2481, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 14:52:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-06-05 14:52:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 5366. [2021-06-05 14:52:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.5183597390493944) internal successors, (18876), 5365 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18876 transitions. [2021-06-05 14:52:04,409 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18876 transitions. Word has length 47 [2021-06-05 14:52:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:04,409 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 18876 transitions. [2021-06-05 14:52:04,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18876 transitions. [2021-06-05 14:52:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:04,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:04,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:04,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 14:52:04,423 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash -813197124, now seen corresponding path program 9 times [2021-06-05 14:52:04,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:04,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904658104] [2021-06-05 14:52:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:04,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:04,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904658104] [2021-06-05 14:52:04,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904658104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:04,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:04,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:04,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550986020] [2021-06-05 14:52:04,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:04,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:04,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:04,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:04,705 INFO L87 Difference]: Start difference. First operand 5366 states and 18876 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:05,832 INFO L93 Difference]: Finished difference Result 6007 states and 21031 transitions. [2021-06-05 14:52:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:52:05,833 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:05,848 INFO L225 Difference]: With dead ends: 6007 [2021-06-05 14:52:05,848 INFO L226 Difference]: Without dead ends: 5880 [2021-06-05 14:52:05,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 741.5ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:52:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2021-06-05 14:52:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5378. [2021-06-05 14:52:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.5160870373814395) internal successors, (18906), 5377 states have internal predecessors, (18906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18906 transitions. [2021-06-05 14:52:05,980 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18906 transitions. Word has length 47 [2021-06-05 14:52:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:05,981 INFO L482 AbstractCegarLoop]: Abstraction has 5378 states and 18906 transitions. [2021-06-05 14:52:05,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18906 transitions. [2021-06-05 14:52:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:05,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:05,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:05,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 14:52:05,992 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:05,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1596451462, now seen corresponding path program 10 times [2021-06-05 14:52:05,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:05,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108120271] [2021-06-05 14:52:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:06,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:06,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108120271] [2021-06-05 14:52:06,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108120271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:06,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:06,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:06,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687292667] [2021-06-05 14:52:06,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:06,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:06,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:06,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:06,285 INFO L87 Difference]: Start difference. First operand 5378 states and 18906 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:08,018 INFO L93 Difference]: Finished difference Result 7954 states and 27964 transitions. [2021-06-05 14:52:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 14:52:08,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:08,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:08,080 INFO L225 Difference]: With dead ends: 7954 [2021-06-05 14:52:08,080 INFO L226 Difference]: Without dead ends: 7865 [2021-06-05 14:52:08,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1077.2ms TimeCoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 14:52:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2021-06-05 14:52:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 5394. [2021-06-05 14:52:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5141850547005378) internal successors, (18952), 5393 states have internal predecessors, (18952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18952 transitions. [2021-06-05 14:52:08,213 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18952 transitions. Word has length 47 [2021-06-05 14:52:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:08,214 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18952 transitions. [2021-06-05 14:52:08,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18952 transitions. [2021-06-05 14:52:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:08,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:08,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:08,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 14:52:08,225 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1847863926, now seen corresponding path program 11 times [2021-06-05 14:52:08,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:08,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014989169] [2021-06-05 14:52:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:08,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:08,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014989169] [2021-06-05 14:52:08,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014989169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:08,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:08,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:08,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061462628] [2021-06-05 14:52:08,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:08,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:08,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:08,511 INFO L87 Difference]: Start difference. First operand 5394 states and 18952 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:10,447 INFO L93 Difference]: Finished difference Result 8522 states and 30214 transitions. [2021-06-05 14:52:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 14:52:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:10,463 INFO L225 Difference]: With dead ends: 8522 [2021-06-05 14:52:10,463 INFO L226 Difference]: Without dead ends: 8419 [2021-06-05 14:52:10,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1151.7ms TimeCoverageRelationStatistics Valid=328, Invalid=3212, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 14:52:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-06-05 14:52:10,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 5374. [2021-06-05 14:52:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5374 states, 5373 states have (on average 3.5175879396984926) internal successors, (18900), 5373 states have internal predecessors, (18900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18900 transitions. [2021-06-05 14:52:10,616 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18900 transitions. Word has length 47 [2021-06-05 14:52:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:10,616 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18900 transitions. [2021-06-05 14:52:10,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18900 transitions. [2021-06-05 14:52:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:10,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:10,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:10,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 14:52:10,630 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash 728726234, now seen corresponding path program 12 times [2021-06-05 14:52:10,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:10,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670303862] [2021-06-05 14:52:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:10,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:10,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670303862] [2021-06-05 14:52:10,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670303862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:10,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:10,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:10,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696151516] [2021-06-05 14:52:10,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:10,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:10,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:10,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:10,929 INFO L87 Difference]: Start difference. First operand 5374 states and 18900 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:12,157 INFO L93 Difference]: Finished difference Result 5781 states and 20210 transitions. [2021-06-05 14:52:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:52:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:12,167 INFO L225 Difference]: With dead ends: 5781 [2021-06-05 14:52:12,167 INFO L226 Difference]: Without dead ends: 5654 [2021-06-05 14:52:12,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 769.5ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:52:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-06-05 14:52:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5386. [2021-06-05 14:52:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5153203342618387) internal successors, (18930), 5385 states have internal predecessors, (18930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18930 transitions. [2021-06-05 14:52:12,306 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18930 transitions. Word has length 47 [2021-06-05 14:52:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:12,306 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18930 transitions. [2021-06-05 14:52:12,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18930 transitions. [2021-06-05 14:52:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:12,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:12,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:12,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 14:52:12,317 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:12,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1738869802, now seen corresponding path program 13 times [2021-06-05 14:52:12,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:12,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878423431] [2021-06-05 14:52:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:12,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:12,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878423431] [2021-06-05 14:52:12,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878423431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:12,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:12,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:52:12,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308692322] [2021-06-05 14:52:12,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:52:12,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:12,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:52:12,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:52:12,601 INFO L87 Difference]: Start difference. First operand 5386 states and 18930 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:13,741 INFO L93 Difference]: Finished difference Result 5850 states and 20412 transitions. [2021-06-05 14:52:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:52:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:13,754 INFO L225 Difference]: With dead ends: 5850 [2021-06-05 14:52:13,754 INFO L226 Difference]: Without dead ends: 5753 [2021-06-05 14:52:13,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 716.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:52:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-06-05 14:52:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5392. [2021-06-05 14:52:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5141903171953257) internal successors, (18945), 5391 states have internal predecessors, (18945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18945 transitions. [2021-06-05 14:52:13,877 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18945 transitions. Word has length 47 [2021-06-05 14:52:13,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:13,878 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18945 transitions. [2021-06-05 14:52:13,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:13,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18945 transitions. [2021-06-05 14:52:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:13,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:13,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:13,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 14:52:13,888 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1736195976, now seen corresponding path program 14 times [2021-06-05 14:52:13,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:13,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191172001] [2021-06-05 14:52:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:14,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:14,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191172001] [2021-06-05 14:52:14,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191172001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:14,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:14,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:14,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341331775] [2021-06-05 14:52:14,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:14,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:14,177 INFO L87 Difference]: Start difference. First operand 5392 states and 18945 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:15,301 INFO L93 Difference]: Finished difference Result 5751 states and 20107 transitions. [2021-06-05 14:52:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:52:15,301 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:15,312 INFO L225 Difference]: With dead ends: 5751 [2021-06-05 14:52:15,312 INFO L226 Difference]: Without dead ends: 5642 [2021-06-05 14:52:15,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 733.4ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:52:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-06-05 14:52:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5374. [2021-06-05 14:52:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5374 states, 5373 states have (on average 3.5168434766424714) internal successors, (18896), 5373 states have internal predecessors, (18896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18896 transitions. [2021-06-05 14:52:15,410 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18896 transitions. Word has length 47 [2021-06-05 14:52:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:15,410 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18896 transitions. [2021-06-05 14:52:15,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18896 transitions. [2021-06-05 14:52:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:15,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:15,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:15,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 14:52:15,420 INFO L430 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:15,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1817793914, now seen corresponding path program 15 times [2021-06-05 14:52:15,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:15,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452180133] [2021-06-05 14:52:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:15,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:15,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452180133] [2021-06-05 14:52:15,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452180133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:15,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:15,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:15,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881825047] [2021-06-05 14:52:15,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:15,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:15,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:15,663 INFO L87 Difference]: Start difference. First operand 5374 states and 18896 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:16,921 INFO L93 Difference]: Finished difference Result 5967 states and 20772 transitions. [2021-06-05 14:52:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:52:16,921 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:16,932 INFO L225 Difference]: With dead ends: 5967 [2021-06-05 14:52:16,932 INFO L226 Difference]: Without dead ends: 5846 [2021-06-05 14:52:16,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 819.4ms TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 14:52:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-06-05 14:52:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5380. [2021-06-05 14:52:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5380 states, 5379 states have (on average 3.5153374233128836) internal successors, (18909), 5379 states have internal predecessors, (18909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 18909 transitions. [2021-06-05 14:52:17,036 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 18909 transitions. Word has length 47 [2021-06-05 14:52:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:17,036 INFO L482 AbstractCegarLoop]: Abstraction has 5380 states and 18909 transitions. [2021-06-05 14:52:17,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 18909 transitions. [2021-06-05 14:52:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:17,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:17,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:17,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 14:52:17,045 INFO L430 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:17,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:17,045 INFO L82 PathProgramCache]: Analyzing trace with hash -905751946, now seen corresponding path program 16 times [2021-06-05 14:52:17,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:17,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124992321] [2021-06-05 14:52:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:17,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:17,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124992321] [2021-06-05 14:52:17,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124992321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:17,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:17,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:17,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620971395] [2021-06-05 14:52:17,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:17,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:17,304 INFO L87 Difference]: Start difference. First operand 5380 states and 18909 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:18,765 INFO L93 Difference]: Finished difference Result 6544 states and 22781 transitions. [2021-06-05 14:52:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 14:52:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:18,777 INFO L225 Difference]: With dead ends: 6544 [2021-06-05 14:52:18,777 INFO L226 Difference]: Without dead ends: 6449 [2021-06-05 14:52:18,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 929.3ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 14:52:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2021-06-05 14:52:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 5382. [2021-06-05 14:52:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5149600446013753) internal successors, (18914), 5381 states have internal predecessors, (18914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18914 transitions. [2021-06-05 14:52:18,884 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18914 transitions. Word has length 47 [2021-06-05 14:52:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:18,884 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18914 transitions. [2021-06-05 14:52:18,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18914 transitions. [2021-06-05 14:52:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:18,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:18,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:18,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 14:52:18,894 INFO L430 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:18,894 INFO L82 PathProgramCache]: Analyzing trace with hash -606860268, now seen corresponding path program 17 times [2021-06-05 14:52:18,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:18,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596955286] [2021-06-05 14:52:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:19,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:19,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596955286] [2021-06-05 14:52:19,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596955286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:19,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:19,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:52:19,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413200133] [2021-06-05 14:52:19,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:52:19,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:19,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:52:19,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:52:19,137 INFO L87 Difference]: Start difference. First operand 5382 states and 18914 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:20,154 INFO L93 Difference]: Finished difference Result 5846 states and 20396 transitions. [2021-06-05 14:52:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:52:20,154 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:20,164 INFO L225 Difference]: With dead ends: 5846 [2021-06-05 14:52:20,164 INFO L226 Difference]: Without dead ends: 5749 [2021-06-05 14:52:20,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 681.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:52:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2021-06-05 14:52:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5388. [2021-06-05 14:52:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5387 states have (on average 3.5138295897531093) internal successors, (18929), 5387 states have internal predecessors, (18929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18929 transitions. [2021-06-05 14:52:20,246 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 18929 transitions. Word has length 47 [2021-06-05 14:52:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:20,246 INFO L482 AbstractCegarLoop]: Abstraction has 5388 states and 18929 transitions. [2021-06-05 14:52:20,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 18929 transitions. [2021-06-05 14:52:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:20,253 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:20,253 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:20,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 14:52:20,254 INFO L430 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:20,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1962686518, now seen corresponding path program 18 times [2021-06-05 14:52:20,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:20,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826301547] [2021-06-05 14:52:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:20,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:20,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826301547] [2021-06-05 14:52:20,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826301547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:20,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:20,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:20,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342866435] [2021-06-05 14:52:20,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:20,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:20,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:20,557 INFO L87 Difference]: Start difference. First operand 5388 states and 18929 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:21,699 INFO L93 Difference]: Finished difference Result 5747 states and 20091 transitions. [2021-06-05 14:52:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:52:21,700 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:21,709 INFO L225 Difference]: With dead ends: 5747 [2021-06-05 14:52:21,710 INFO L226 Difference]: Without dead ends: 5644 [2021-06-05 14:52:21,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 792.5ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:52:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-06-05 14:52:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5376. [2021-06-05 14:52:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.5164651162790697) internal successors, (18901), 5375 states have internal predecessors, (18901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18901 transitions. [2021-06-05 14:52:21,795 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18901 transitions. Word has length 47 [2021-06-05 14:52:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:21,796 INFO L482 AbstractCegarLoop]: Abstraction has 5376 states and 18901 transitions. [2021-06-05 14:52:21,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18901 transitions. [2021-06-05 14:52:21,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:21,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:21,804 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:21,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 14:52:21,804 INFO L430 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash -261669676, now seen corresponding path program 19 times [2021-06-05 14:52:21,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:21,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860506389] [2021-06-05 14:52:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:22,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:22,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860506389] [2021-06-05 14:52:22,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860506389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:22,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:22,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:52:22,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85458198] [2021-06-05 14:52:22,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:52:22,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:52:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:52:22,062 INFO L87 Difference]: Start difference. First operand 5376 states and 18901 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:23,061 INFO L93 Difference]: Finished difference Result 5823 states and 20345 transitions. [2021-06-05 14:52:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:52:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:23,071 INFO L225 Difference]: With dead ends: 5823 [2021-06-05 14:52:23,071 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 14:52:23,072 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 684.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 14:52:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 14:52:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5418. [2021-06-05 14:52:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.5085840871330993) internal successors, (19006), 5417 states have internal predecessors, (19006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19006 transitions. [2021-06-05 14:52:23,155 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19006 transitions. Word has length 47 [2021-06-05 14:52:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:23,155 INFO L482 AbstractCegarLoop]: Abstraction has 5418 states and 19006 transitions. [2021-06-05 14:52:23,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19006 transitions. [2021-06-05 14:52:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:23,162 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:23,162 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:23,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 14:52:23,163 INFO L430 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:23,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:23,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1070610284, now seen corresponding path program 20 times [2021-06-05 14:52:23,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:23,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707265077] [2021-06-05 14:52:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:23,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:23,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707265077] [2021-06-05 14:52:23,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707265077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:23,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:23,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:23,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739798513] [2021-06-05 14:52:23,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:23,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:23,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:23,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:23,417 INFO L87 Difference]: Start difference. First operand 5418 states and 19006 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:24,580 INFO L93 Difference]: Finished difference Result 5807 states and 20277 transitions. [2021-06-05 14:52:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:52:24,581 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:24,590 INFO L225 Difference]: With dead ends: 5807 [2021-06-05 14:52:24,590 INFO L226 Difference]: Without dead ends: 5662 [2021-06-05 14:52:24,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 766.9ms TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:52:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-06-05 14:52:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5394. [2021-06-05 14:52:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5119599480808454) internal successors, (18940), 5393 states have internal predecessors, (18940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18940 transitions. [2021-06-05 14:52:24,708 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18940 transitions. Word has length 47 [2021-06-05 14:52:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:24,709 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18940 transitions. [2021-06-05 14:52:24,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18940 transitions. [2021-06-05 14:52:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:24,718 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:24,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:24,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 14:52:24,719 INFO L430 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash -170714506, now seen corresponding path program 21 times [2021-06-05 14:52:24,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:24,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650365979] [2021-06-05 14:52:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:24,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:24,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650365979] [2021-06-05 14:52:24,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650365979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:24,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:24,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:24,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655498359] [2021-06-05 14:52:24,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:24,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:24,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:24,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:24,994 INFO L87 Difference]: Start difference. First operand 5394 states and 18940 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:28,438 INFO L93 Difference]: Finished difference Result 10437 states and 36983 transitions. [2021-06-05 14:52:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 14:52:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:28,458 INFO L225 Difference]: With dead ends: 10437 [2021-06-05 14:52:28,458 INFO L226 Difference]: Without dead ends: 10163 [2021-06-05 14:52:28,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 2133.5ms TimeCoverageRelationStatistics Valid=673, Invalid=6809, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 14:52:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-06-05 14:52:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6026. [2021-06-05 14:52:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 3.5100414937759337) internal successors, (21148), 6025 states have internal predecessors, (21148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 21148 transitions. [2021-06-05 14:52:28,595 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 21148 transitions. Word has length 47 [2021-06-05 14:52:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:28,595 INFO L482 AbstractCegarLoop]: Abstraction has 6026 states and 21148 transitions. [2021-06-05 14:52:28,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 21148 transitions. [2021-06-05 14:52:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:28,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:28,604 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:28,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 14:52:28,604 INFO L430 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:28,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1021366414, now seen corresponding path program 22 times [2021-06-05 14:52:28,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:28,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517122044] [2021-06-05 14:52:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:28,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:28,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517122044] [2021-06-05 14:52:28,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517122044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:28,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:28,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:28,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234449200] [2021-06-05 14:52:28,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:28,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:28,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:28,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:28,874 INFO L87 Difference]: Start difference. First operand 6026 states and 21148 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:32,219 INFO L93 Difference]: Finished difference Result 10391 states and 37054 transitions. [2021-06-05 14:52:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 14:52:32,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:32,238 INFO L225 Difference]: With dead ends: 10391 [2021-06-05 14:52:32,239 INFO L226 Difference]: Without dead ends: 10284 [2021-06-05 14:52:32,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 2047.2ms TimeCoverageRelationStatistics Valid=623, Invalid=6349, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 14:52:32,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2021-06-05 14:52:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 5934. [2021-06-05 14:52:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5934 states, 5933 states have (on average 3.5155907635260406) internal successors, (20858), 5933 states have internal predecessors, (20858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5934 states to 5934 states and 20858 transitions. [2021-06-05 14:52:32,357 INFO L78 Accepts]: Start accepts. Automaton has 5934 states and 20858 transitions. Word has length 47 [2021-06-05 14:52:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:32,357 INFO L482 AbstractCegarLoop]: Abstraction has 5934 states and 20858 transitions. [2021-06-05 14:52:32,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5934 states and 20858 transitions. [2021-06-05 14:52:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:32,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:32,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:32,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 14:52:32,365 INFO L430 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash 659235032, now seen corresponding path program 23 times [2021-06-05 14:52:32,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:32,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078078653] [2021-06-05 14:52:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:32,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:32,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078078653] [2021-06-05 14:52:32,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078078653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:32,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:32,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:32,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088928880] [2021-06-05 14:52:32,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:32,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:32,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:32,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:32,609 INFO L87 Difference]: Start difference. First operand 5934 states and 20858 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:33,873 INFO L93 Difference]: Finished difference Result 6577 states and 22905 transitions. [2021-06-05 14:52:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:52:33,873 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:33,886 INFO L225 Difference]: With dead ends: 6577 [2021-06-05 14:52:33,886 INFO L226 Difference]: Without dead ends: 6456 [2021-06-05 14:52:33,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 850.0ms TimeCoverageRelationStatistics Valid=220, Invalid=2230, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 14:52:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-06-05 14:52:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5940. [2021-06-05 14:52:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.514227984509177) internal successors, (20871), 5939 states have internal predecessors, (20871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20871 transitions. [2021-06-05 14:52:34,002 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20871 transitions. Word has length 47 [2021-06-05 14:52:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:34,002 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20871 transitions. [2021-06-05 14:52:34,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20871 transitions. [2021-06-05 14:52:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:34,010 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:34,010 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:34,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 14:52:34,010 INFO L430 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:34,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2064310828, now seen corresponding path program 24 times [2021-06-05 14:52:34,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:34,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363057836] [2021-06-05 14:52:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:34,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:34,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363057836] [2021-06-05 14:52:34,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363057836] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:34,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:34,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:34,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190653327] [2021-06-05 14:52:34,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:34,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:34,256 INFO L87 Difference]: Start difference. First operand 5940 states and 20871 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:35,751 INFO L93 Difference]: Finished difference Result 7065 states and 24685 transitions. [2021-06-05 14:52:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 14:52:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:35,765 INFO L225 Difference]: With dead ends: 7065 [2021-06-05 14:52:35,765 INFO L226 Difference]: Without dead ends: 6821 [2021-06-05 14:52:35,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 952.5ms TimeCoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 14:52:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-06-05 14:52:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5936. [2021-06-05 14:52:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.5149115417017693) internal successors, (20861), 5935 states have internal predecessors, (20861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20861 transitions. [2021-06-05 14:52:35,866 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20861 transitions. Word has length 47 [2021-06-05 14:52:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:35,866 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20861 transitions. [2021-06-05 14:52:35,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20861 transitions. [2021-06-05 14:52:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:35,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:35,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:35,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 14:52:35,874 INFO L430 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1765419150, now seen corresponding path program 25 times [2021-06-05 14:52:35,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:35,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137905406] [2021-06-05 14:52:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:36,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:36,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137905406] [2021-06-05 14:52:36,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137905406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:36,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:36,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:52:36,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290860509] [2021-06-05 14:52:36,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:52:36,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:36,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:52:36,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:52:36,136 INFO L87 Difference]: Start difference. First operand 5936 states and 20861 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:37,197 INFO L93 Difference]: Finished difference Result 6458 states and 22526 transitions. [2021-06-05 14:52:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:52:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:37,209 INFO L225 Difference]: With dead ends: 6458 [2021-06-05 14:52:37,209 INFO L226 Difference]: Without dead ends: 6361 [2021-06-05 14:52:37,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 717.6ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:52:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-06-05 14:52:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5950. [2021-06-05 14:52:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 5949 states have (on average 3.5111783493024036) internal successors, (20888), 5949 states have internal predecessors, (20888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20888 transitions. [2021-06-05 14:52:37,305 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20888 transitions. Word has length 47 [2021-06-05 14:52:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:37,305 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20888 transitions. [2021-06-05 14:52:37,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20888 transitions. [2021-06-05 14:52:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:37,313 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:37,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:37,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 14:52:37,313 INFO L430 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 804127636, now seen corresponding path program 26 times [2021-06-05 14:52:37,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:37,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559128851] [2021-06-05 14:52:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:37,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:37,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559128851] [2021-06-05 14:52:37,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559128851] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:37,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:37,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:37,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138886234] [2021-06-05 14:52:37,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:37,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:37,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:37,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:37,553 INFO L87 Difference]: Start difference. First operand 5950 states and 20888 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:38,684 INFO L93 Difference]: Finished difference Result 6359 states and 22221 transitions. [2021-06-05 14:52:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:52:38,685 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:38,696 INFO L225 Difference]: With dead ends: 6359 [2021-06-05 14:52:38,696 INFO L226 Difference]: Without dead ends: 6242 [2021-06-05 14:52:38,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 703.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:52:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2021-06-05 14:52:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 5924. [2021-06-05 14:52:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5924 states, 5923 states have (on average 3.515617085936181) internal successors, (20823), 5923 states have internal predecessors, (20823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 20823 transitions. [2021-06-05 14:52:38,798 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 20823 transitions. Word has length 47 [2021-06-05 14:52:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:38,798 INFO L482 AbstractCegarLoop]: Abstraction has 5924 states and 20823 transitions. [2021-06-05 14:52:38,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 20823 transitions. [2021-06-05 14:52:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:38,808 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:38,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:38,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 14:52:38,809 INFO L430 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash -234197158, now seen corresponding path program 27 times [2021-06-05 14:52:38,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:38,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851218537] [2021-06-05 14:52:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:39,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:39,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851218537] [2021-06-05 14:52:39,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851218537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:39,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:39,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:39,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697121603] [2021-06-05 14:52:39,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:39,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:39,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:39,046 INFO L87 Difference]: Start difference. First operand 5924 states and 20823 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:40,159 INFO L93 Difference]: Finished difference Result 6593 states and 23082 transitions. [2021-06-05 14:52:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:52:40,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:40,171 INFO L225 Difference]: With dead ends: 6593 [2021-06-05 14:52:40,171 INFO L226 Difference]: Without dead ends: 6466 [2021-06-05 14:52:40,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 732.1ms TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 14:52:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-06-05 14:52:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 5944. [2021-06-05 14:52:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.513545347467609) internal successors, (20881), 5943 states have internal predecessors, (20881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20881 transitions. [2021-06-05 14:52:40,260 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20881 transitions. Word has length 47 [2021-06-05 14:52:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:40,260 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20881 transitions. [2021-06-05 14:52:40,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20881 transitions. [2021-06-05 14:52:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:40,267 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:40,268 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:40,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 14:52:40,268 INFO L430 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:40,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1017451496, now seen corresponding path program 28 times [2021-06-05 14:52:40,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:40,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54901758] [2021-06-05 14:52:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:40,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:40,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54901758] [2021-06-05 14:52:40,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54901758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:40,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:40,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:40,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591113933] [2021-06-05 14:52:40,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:40,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:40,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:40,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:40,508 INFO L87 Difference]: Start difference. First operand 5944 states and 20881 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:42,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:42,372 INFO L93 Difference]: Finished difference Result 9238 states and 32604 transitions. [2021-06-05 14:52:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 14:52:42,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:42,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:42,390 INFO L225 Difference]: With dead ends: 9238 [2021-06-05 14:52:42,390 INFO L226 Difference]: Without dead ends: 9149 [2021-06-05 14:52:42,390 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1133.5ms TimeCoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 14:52:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2021-06-05 14:52:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 5968. [2021-06-05 14:52:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5968 states, 5967 states have (on average 3.5118149824032177) internal successors, (20955), 5967 states have internal predecessors, (20955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 20955 transitions. [2021-06-05 14:52:42,490 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 20955 transitions. Word has length 47 [2021-06-05 14:52:42,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:42,491 INFO L482 AbstractCegarLoop]: Abstraction has 5968 states and 20955 transitions. [2021-06-05 14:52:42,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 20955 transitions. [2021-06-05 14:52:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:42,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:42,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:42,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 14:52:42,499 INFO L430 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:42,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1868103404, now seen corresponding path program 29 times [2021-06-05 14:52:42,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:42,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899651392] [2021-06-05 14:52:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:42,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:42,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899651392] [2021-06-05 14:52:42,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899651392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:42,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:42,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:42,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011921924] [2021-06-05 14:52:42,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:42,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:42,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:42,765 INFO L87 Difference]: Start difference. First operand 5968 states and 20955 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:44,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:44,627 INFO L93 Difference]: Finished difference Result 9722 states and 34560 transitions. [2021-06-05 14:52:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 14:52:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:44,645 INFO L225 Difference]: With dead ends: 9722 [2021-06-05 14:52:44,645 INFO L226 Difference]: Without dead ends: 9619 [2021-06-05 14:52:44,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1110.2ms TimeCoverageRelationStatistics Valid=332, Invalid=3450, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 14:52:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-06-05 14:52:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5948. [2021-06-05 14:52:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.5148814528333614) internal successors, (20903), 5947 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20903 transitions. [2021-06-05 14:52:44,753 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20903 transitions. Word has length 47 [2021-06-05 14:52:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:44,753 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20903 transitions. [2021-06-05 14:52:44,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20903 transitions. [2021-06-05 14:52:44,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:44,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:44,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:44,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 14:52:44,761 INFO L430 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:44,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1307726200, now seen corresponding path program 30 times [2021-06-05 14:52:44,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:44,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015106119] [2021-06-05 14:52:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:44,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:44,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015106119] [2021-06-05 14:52:44,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015106119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:44,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:44,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:44,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713846309] [2021-06-05 14:52:44,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:44,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:44,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:44,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:44,978 INFO L87 Difference]: Start difference. First operand 5948 states and 20903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:46,025 INFO L93 Difference]: Finished difference Result 6447 states and 22511 transitions. [2021-06-05 14:52:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:52:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:46,036 INFO L225 Difference]: With dead ends: 6447 [2021-06-05 14:52:46,036 INFO L226 Difference]: Without dead ends: 6320 [2021-06-05 14:52:46,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 676.8ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:52:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-06-05 14:52:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 5960. [2021-06-05 14:52:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 3.512837724450411) internal successors, (20933), 5959 states have internal predecessors, (20933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20933 transitions. [2021-06-05 14:52:46,177 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20933 transitions. Word has length 47 [2021-06-05 14:52:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:46,177 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20933 transitions. [2021-06-05 14:52:46,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:46,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20933 transitions. [2021-06-05 14:52:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:46,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:46,185 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:46,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 14:52:46,186 INFO L430 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:46,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:46,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1159869836, now seen corresponding path program 31 times [2021-06-05 14:52:46,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:46,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501978956] [2021-06-05 14:52:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:46,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:46,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501978956] [2021-06-05 14:52:46,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501978956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:46,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:46,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:46,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382842929] [2021-06-05 14:52:46,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:46,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:46,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:46,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:46,413 INFO L87 Difference]: Start difference. First operand 5960 states and 20933 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:47,603 INFO L93 Difference]: Finished difference Result 6520 states and 22721 transitions. [2021-06-05 14:52:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:52:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:47,615 INFO L225 Difference]: With dead ends: 6520 [2021-06-05 14:52:47,615 INFO L226 Difference]: Without dead ends: 6423 [2021-06-05 14:52:47,616 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 797.1ms TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 14:52:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2021-06-05 14:52:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5966. [2021-06-05 14:52:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 5965 states have (on average 3.511818943839061) internal successors, (20948), 5965 states have internal predecessors, (20948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20948 transitions. [2021-06-05 14:52:47,706 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20948 transitions. Word has length 47 [2021-06-05 14:52:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:47,707 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20948 transitions. [2021-06-05 14:52:47,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20948 transitions. [2021-06-05 14:52:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:47,714 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:47,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:47,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 14:52:47,715 INFO L430 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:47,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1157196010, now seen corresponding path program 32 times [2021-06-05 14:52:47,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:47,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826602717] [2021-06-05 14:52:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:47,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:47,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826602717] [2021-06-05 14:52:47,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826602717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:47,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:47,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:47,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153306766] [2021-06-05 14:52:47,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:47,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:47,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:47,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:47,949 INFO L87 Difference]: Start difference. First operand 5966 states and 20948 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:49,029 INFO L93 Difference]: Finished difference Result 6417 states and 22408 transitions. [2021-06-05 14:52:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:52:49,030 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:49,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:49,041 INFO L225 Difference]: With dead ends: 6417 [2021-06-05 14:52:49,041 INFO L226 Difference]: Without dead ends: 6308 [2021-06-05 14:52:49,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 718.8ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 14:52:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-06-05 14:52:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5948. [2021-06-05 14:52:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.514208844795695) internal successors, (20899), 5947 states have internal predecessors, (20899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20899 transitions. [2021-06-05 14:52:49,130 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20899 transitions. Word has length 47 [2021-06-05 14:52:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:49,130 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20899 transitions. [2021-06-05 14:52:49,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20899 transitions. [2021-06-05 14:52:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:49,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:49,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:49,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 14:52:49,138 INFO L430 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:49,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1898173416, now seen corresponding path program 33 times [2021-06-05 14:52:49,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:49,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10368651] [2021-06-05 14:52:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:49,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:49,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10368651] [2021-06-05 14:52:49,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10368651] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:49,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:49,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:49,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828074867] [2021-06-05 14:52:49,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:49,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:49,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:49,367 INFO L87 Difference]: Start difference. First operand 5948 states and 20899 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:50,594 INFO L93 Difference]: Finished difference Result 6609 states and 22999 transitions. [2021-06-05 14:52:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 14:52:50,595 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:50,606 INFO L225 Difference]: With dead ends: 6609 [2021-06-05 14:52:50,606 INFO L226 Difference]: Without dead ends: 6488 [2021-06-05 14:52:50,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 814.7ms TimeCoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 14:52:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-06-05 14:52:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5954. [2021-06-05 14:52:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5954 states, 5953 states have (on average 3.5128506635309926) internal successors, (20912), 5953 states have internal predecessors, (20912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 20912 transitions. [2021-06-05 14:52:50,692 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 20912 transitions. Word has length 47 [2021-06-05 14:52:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:50,692 INFO L482 AbstractCegarLoop]: Abstraction has 5954 states and 20912 transitions. [2021-06-05 14:52:50,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 20912 transitions. [2021-06-05 14:52:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:50,700 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:50,700 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:50,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 14:52:50,700 INFO L430 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:50,701 INFO L82 PathProgramCache]: Analyzing trace with hash -326751980, now seen corresponding path program 34 times [2021-06-05 14:52:50,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:50,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951168399] [2021-06-05 14:52:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:50,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:50,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951168399] [2021-06-05 14:52:50,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951168399] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:50,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:50,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:50,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917555789] [2021-06-05 14:52:50,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:50,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:50,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:50,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:50,937 INFO L87 Difference]: Start difference. First operand 5954 states and 20912 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:52,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:52,571 INFO L93 Difference]: Finished difference Result 7878 states and 27548 transitions. [2021-06-05 14:52:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 14:52:52,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:52,586 INFO L225 Difference]: With dead ends: 7878 [2021-06-05 14:52:52,586 INFO L226 Difference]: Without dead ends: 7783 [2021-06-05 14:52:52,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 971.6ms TimeCoverageRelationStatistics Valid=293, Invalid=3129, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 14:52:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-06-05 14:52:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5944. [2021-06-05 14:52:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.5142184082113412) internal successors, (20885), 5943 states have internal predecessors, (20885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20885 transitions. [2021-06-05 14:52:52,681 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20885 transitions. Word has length 47 [2021-06-05 14:52:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:52,681 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20885 transitions. [2021-06-05 14:52:52,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20885 transitions. [2021-06-05 14:52:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:52,688 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:52,688 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:52,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 14:52:52,689 INFO L430 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:52,689 INFO L82 PathProgramCache]: Analyzing trace with hash -27860302, now seen corresponding path program 35 times [2021-06-05 14:52:52,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:52,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95495356] [2021-06-05 14:52:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:52,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:52,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95495356] [2021-06-05 14:52:52,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95495356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:52,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:52,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:52,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468896029] [2021-06-05 14:52:52,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:52,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:52,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:52,947 INFO L87 Difference]: Start difference. First operand 5944 states and 20885 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:54,234 INFO L93 Difference]: Finished difference Result 6605 states and 22975 transitions. [2021-06-05 14:52:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 14:52:54,234 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:54,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:54,246 INFO L225 Difference]: With dead ends: 6605 [2021-06-05 14:52:54,246 INFO L226 Difference]: Without dead ends: 6508 [2021-06-05 14:52:54,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 887.8ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 14:52:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-06-05 14:52:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 5952. [2021-06-05 14:52:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.5125189043858174) internal successors, (20903), 5951 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20903 transitions. [2021-06-05 14:52:54,372 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20903 transitions. Word has length 47 [2021-06-05 14:52:54,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:54,372 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20903 transitions. [2021-06-05 14:52:54,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20903 transitions. [2021-06-05 14:52:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:54,379 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:54,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:54,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 14:52:54,380 INFO L430 AbstractCegarLoop]: === Iteration 36 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1753280812, now seen corresponding path program 36 times [2021-06-05 14:52:54,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:54,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704093680] [2021-06-05 14:52:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:54,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:54,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704093680] [2021-06-05 14:52:54,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704093680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:54,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:54,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:54,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120948731] [2021-06-05 14:52:54,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:54,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:54,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:54,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:54,601 INFO L87 Difference]: Start difference. First operand 5952 states and 20903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:55,741 INFO L93 Difference]: Finished difference Result 6502 states and 22662 transitions. [2021-06-05 14:52:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 14:52:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:55,752 INFO L225 Difference]: With dead ends: 6502 [2021-06-05 14:52:55,752 INFO L226 Difference]: Without dead ends: 6399 [2021-06-05 14:52:55,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 730.2ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:52:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-06-05 14:52:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5940. [2021-06-05 14:52:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.5149014985687828) internal successors, (20875), 5939 states have internal predecessors, (20875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20875 transitions. [2021-06-05 14:52:55,840 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20875 transitions. Word has length 47 [2021-06-05 14:52:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:55,841 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20875 transitions. [2021-06-05 14:52:55,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20875 transitions. [2021-06-05 14:52:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:55,848 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:55,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:55,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 14:52:55,848 INFO L430 AbstractCegarLoop]: === Iteration 37 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 392123308, now seen corresponding path program 37 times [2021-06-05 14:52:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:55,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043244532] [2021-06-05 14:52:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:56,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:56,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043244532] [2021-06-05 14:52:56,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043244532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:56,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:56,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:56,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751873597] [2021-06-05 14:52:56,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:56,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:56,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:56,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:56,114 INFO L87 Difference]: Start difference. First operand 5940 states and 20875 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:57,218 INFO L93 Difference]: Finished difference Result 6361 states and 22242 transitions. [2021-06-05 14:52:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:52:57,218 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:57,229 INFO L225 Difference]: With dead ends: 6361 [2021-06-05 14:52:57,229 INFO L226 Difference]: Without dead ends: 6234 [2021-06-05 14:52:57,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 708.9ms TimeCoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:52:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-06-05 14:52:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5976. [2021-06-05 14:52:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.5128033472803346) internal successors, (20989), 5975 states have internal predecessors, (20989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:57,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20989 transitions. [2021-06-05 14:52:57,316 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20989 transitions. Word has length 47 [2021-06-05 14:52:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:57,316 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20989 transitions. [2021-06-05 14:52:57,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20989 transitions. [2021-06-05 14:52:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:57,324 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:57,324 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:57,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 14:52:57,324 INFO L430 AbstractCegarLoop]: === Iteration 38 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2075472728, now seen corresponding path program 38 times [2021-06-05 14:52:57,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:57,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798227902] [2021-06-05 14:52:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:57,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:57,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798227902] [2021-06-05 14:52:57,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798227902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:57,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:57,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:57,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834253816] [2021-06-05 14:52:57,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:57,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:57,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:57,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:57,575 INFO L87 Difference]: Start difference. First operand 5976 states and 20989 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:52:58,721 INFO L93 Difference]: Finished difference Result 6440 states and 22471 transitions. [2021-06-05 14:52:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 14:52:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:52:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:52:58,733 INFO L225 Difference]: With dead ends: 6440 [2021-06-05 14:52:58,733 INFO L226 Difference]: Without dead ends: 6343 [2021-06-05 14:52:58,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 773.6ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:52:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2021-06-05 14:52:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 5982. [2021-06-05 14:52:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.5117873265340243) internal successors, (21004), 5981 states have internal predecessors, (21004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 21004 transitions. [2021-06-05 14:52:58,821 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 21004 transitions. Word has length 47 [2021-06-05 14:52:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:52:58,821 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 21004 transitions. [2021-06-05 14:52:58,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:52:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 21004 transitions. [2021-06-05 14:52:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:52:58,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:52:58,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:52:58,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 14:52:58,829 INFO L430 AbstractCegarLoop]: === Iteration 39 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:52:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:52:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2072798902, now seen corresponding path program 39 times [2021-06-05 14:52:58,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:52:58,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189591743] [2021-06-05 14:52:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:52:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:52:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:52:59,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:52:59,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189591743] [2021-06-05 14:52:59,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189591743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:52:59,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:52:59,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:52:59,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628553598] [2021-06-05 14:52:59,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:52:59,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:52:59,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:52:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:52:59,071 INFO L87 Difference]: Start difference. First operand 5982 states and 21004 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:00,050 INFO L93 Difference]: Finished difference Result 6331 states and 22139 transitions. [2021-06-05 14:53:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:00,062 INFO L225 Difference]: With dead ends: 6331 [2021-06-05 14:53:00,062 INFO L226 Difference]: Without dead ends: 6222 [2021-06-05 14:53:00,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 648.5ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:53:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-06-05 14:53:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 5964. [2021-06-05 14:53:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5964 states, 5963 states have (on average 3.512829112862653) internal successors, (20947), 5963 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 20947 transitions. [2021-06-05 14:53:00,150 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 20947 transitions. Word has length 47 [2021-06-05 14:53:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:00,150 INFO L482 AbstractCegarLoop]: Abstraction has 5964 states and 20947 transitions. [2021-06-05 14:53:00,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 20947 transitions. [2021-06-05 14:53:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:00,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:00,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:00,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 14:53:00,158 INFO L430 AbstractCegarLoop]: === Iteration 40 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:00,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1973112992, now seen corresponding path program 40 times [2021-06-05 14:53:00,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:00,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116208991] [2021-06-05 14:53:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:00,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:00,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116208991] [2021-06-05 14:53:00,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116208991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:00,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:00,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:00,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124812908] [2021-06-05 14:53:00,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:00,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:00,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:00,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:00,391 INFO L87 Difference]: Start difference. First operand 5964 states and 20947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:01,432 INFO L93 Difference]: Finished difference Result 6401 states and 22402 transitions. [2021-06-05 14:53:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:01,432 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:01,443 INFO L225 Difference]: With dead ends: 6401 [2021-06-05 14:53:01,443 INFO L226 Difference]: Without dead ends: 6256 [2021-06-05 14:53:01,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 675.2ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-06-05 14:53:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5976. [2021-06-05 14:53:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.510794979079498) internal successors, (20977), 5975 states have internal predecessors, (20977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20977 transitions. [2021-06-05 14:53:01,529 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20977 transitions. Word has length 47 [2021-06-05 14:53:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:01,530 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20977 transitions. [2021-06-05 14:53:01,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20977 transitions. [2021-06-05 14:53:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:01,540 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:01,540 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:01,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 14:53:01,541 INFO L430 AbstractCegarLoop]: === Iteration 41 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1255583042, now seen corresponding path program 41 times [2021-06-05 14:53:01,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:01,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797716582] [2021-06-05 14:53:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:01,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:01,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797716582] [2021-06-05 14:53:01,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797716582] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:01,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:01,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:01,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564037127] [2021-06-05 14:53:01,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:01,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:01,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:01,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:01,801 INFO L87 Difference]: Start difference. First operand 5976 states and 20977 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:02,913 INFO L93 Difference]: Finished difference Result 6422 states and 22406 transitions. [2021-06-05 14:53:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 14:53:02,914 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:02,924 INFO L225 Difference]: With dead ends: 6422 [2021-06-05 14:53:02,924 INFO L226 Difference]: Without dead ends: 6325 [2021-06-05 14:53:02,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 753.5ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:53:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-06-05 14:53:02,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5982. [2021-06-05 14:53:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5982 states, 5981 states have (on average 3.5097809730814244) internal successors, (20992), 5981 states have internal predecessors, (20992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 20992 transitions. [2021-06-05 14:53:03,011 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 20992 transitions. Word has length 47 [2021-06-05 14:53:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:03,012 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 20992 transitions. [2021-06-05 14:53:03,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 20992 transitions. [2021-06-05 14:53:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:03,019 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:03,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:03,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 14:53:03,019 INFO L430 AbstractCegarLoop]: === Iteration 42 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:03,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1252909216, now seen corresponding path program 42 times [2021-06-05 14:53:03,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:03,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477926588] [2021-06-05 14:53:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:03,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:03,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477926588] [2021-06-05 14:53:03,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477926588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:03,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:03,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:03,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49924639] [2021-06-05 14:53:03,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:03,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:03,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:03,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:03,250 INFO L87 Difference]: Start difference. First operand 5982 states and 20992 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:04,248 INFO L93 Difference]: Finished difference Result 6307 states and 22053 transitions. [2021-06-05 14:53:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:53:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:04,259 INFO L225 Difference]: With dead ends: 6307 [2021-06-05 14:53:04,260 INFO L226 Difference]: Without dead ends: 6174 [2021-06-05 14:53:04,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 655.1ms TimeCoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:53:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2021-06-05 14:53:04,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 5940. [2021-06-05 14:53:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 3.5135544704495705) internal successors, (20867), 5939 states have internal predecessors, (20867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20867 transitions. [2021-06-05 14:53:04,349 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20867 transitions. Word has length 47 [2021-06-05 14:53:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:04,349 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20867 transitions. [2021-06-05 14:53:04,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20867 transitions. [2021-06-05 14:53:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:04,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:04,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:04,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 14:53:04,357 INFO L430 AbstractCegarLoop]: === Iteration 43 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:04,357 INFO L82 PathProgramCache]: Analyzing trace with hash -439671468, now seen corresponding path program 43 times [2021-06-05 14:53:04,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:04,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818849721] [2021-06-05 14:53:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:04,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:04,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818849721] [2021-06-05 14:53:04,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818849721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:04,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:04,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:04,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966497245] [2021-06-05 14:53:04,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:04,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:04,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:04,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:04,618 INFO L87 Difference]: Start difference. First operand 5940 states and 20867 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:05,772 INFO L93 Difference]: Finished difference Result 6586 states and 23006 transitions. [2021-06-05 14:53:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 14:53:05,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:05,784 INFO L225 Difference]: With dead ends: 6586 [2021-06-05 14:53:05,784 INFO L226 Difference]: Without dead ends: 6401 [2021-06-05 14:53:05,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 822.8ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 14:53:05,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-06-05 14:53:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5944. [2021-06-05 14:53:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 5943 states have (on average 3.512872286723877) internal successors, (20877), 5943 states have internal predecessors, (20877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20877 transitions. [2021-06-05 14:53:05,877 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20877 transitions. Word has length 47 [2021-06-05 14:53:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:05,877 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20877 transitions. [2021-06-05 14:53:05,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20877 transitions. [2021-06-05 14:53:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:05,886 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:05,886 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:05,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 14:53:05,886 INFO L430 AbstractCegarLoop]: === Iteration 44 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:05,886 INFO L82 PathProgramCache]: Analyzing trace with hash -557163210, now seen corresponding path program 44 times [2021-06-05 14:53:05,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:05,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66045002] [2021-06-05 14:53:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:06,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:06,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66045002] [2021-06-05 14:53:06,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66045002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:06,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:06,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:06,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886019005] [2021-06-05 14:53:06,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:06,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:06,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:06,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:06,141 INFO L87 Difference]: Start difference. First operand 5944 states and 20877 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:07,362 INFO L93 Difference]: Finished difference Result 6678 states and 23209 transitions. [2021-06-05 14:53:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 14:53:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:07,374 INFO L225 Difference]: With dead ends: 6678 [2021-06-05 14:53:07,374 INFO L226 Difference]: Without dead ends: 6541 [2021-06-05 14:53:07,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 858.7ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 14:53:07,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-06-05 14:53:07,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 5950. [2021-06-05 14:53:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 5949 states have (on average 3.511514540258867) internal successors, (20890), 5949 states have internal predecessors, (20890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20890 transitions. [2021-06-05 14:53:07,468 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20890 transitions. Word has length 47 [2021-06-05 14:53:07,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:07,468 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20890 transitions. [2021-06-05 14:53:07,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20890 transitions. [2021-06-05 14:53:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:07,476 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:07,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:07,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 14:53:07,476 INFO L430 AbstractCegarLoop]: === Iteration 45 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:07,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:07,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1014258226, now seen corresponding path program 45 times [2021-06-05 14:53:07,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:07,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391837341] [2021-06-05 14:53:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:07,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:07,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391837341] [2021-06-05 14:53:07,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391837341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:07,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:07,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:07,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594493485] [2021-06-05 14:53:07,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:07,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:07,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:07,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:07,698 INFO L87 Difference]: Start difference. First operand 5950 states and 20890 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:09,977 INFO L93 Difference]: Finished difference Result 9988 states and 35005 transitions. [2021-06-05 14:53:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 14:53:09,977 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:09,996 INFO L225 Difference]: With dead ends: 9988 [2021-06-05 14:53:09,996 INFO L226 Difference]: Without dead ends: 9893 [2021-06-05 14:53:09,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1214.6ms TimeCoverageRelationStatistics Valid=394, Invalid=4718, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 14:53:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-06-05 14:53:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5948. [2021-06-05 14:53:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.512863628720363) internal successors, (20891), 5947 states have internal predecessors, (20891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20891 transitions. [2021-06-05 14:53:10,107 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20891 transitions. Word has length 47 [2021-06-05 14:53:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:10,107 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20891 transitions. [2021-06-05 14:53:10,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20891 transitions. [2021-06-05 14:53:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:10,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:10,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:10,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 14:53:10,115 INFO L430 AbstractCegarLoop]: === Iteration 46 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:10,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1313149904, now seen corresponding path program 46 times [2021-06-05 14:53:10,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:10,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210799835] [2021-06-05 14:53:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:10,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:10,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210799835] [2021-06-05 14:53:10,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210799835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:10,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:10,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:10,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904784279] [2021-06-05 14:53:10,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:10,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:10,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:10,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:10,341 INFO L87 Difference]: Start difference. First operand 5948 states and 20891 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:11,574 INFO L93 Difference]: Finished difference Result 6579 states and 22906 transitions. [2021-06-05 14:53:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 14:53:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:11,585 INFO L225 Difference]: With dead ends: 6579 [2021-06-05 14:53:11,585 INFO L226 Difference]: Without dead ends: 6482 [2021-06-05 14:53:11,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 804.2ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 14:53:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-06-05 14:53:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 5956. [2021-06-05 14:53:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 5955 states have (on average 3.5111670864819478) internal successors, (20909), 5955 states have internal predecessors, (20909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20909 transitions. [2021-06-05 14:53:11,672 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20909 transitions. Word has length 47 [2021-06-05 14:53:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:11,672 INFO L482 AbstractCegarLoop]: Abstraction has 5956 states and 20909 transitions. [2021-06-05 14:53:11,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20909 transitions. [2021-06-05 14:53:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:11,680 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:11,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:11,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 14:53:11,680 INFO L430 AbstractCegarLoop]: === Iteration 47 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:11,680 INFO L82 PathProgramCache]: Analyzing trace with hash -412270606, now seen corresponding path program 47 times [2021-06-05 14:53:11,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:11,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356086558] [2021-06-05 14:53:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:11,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:11,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356086558] [2021-06-05 14:53:11,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356086558] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:11,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:11,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:11,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815099451] [2021-06-05 14:53:11,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:11,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:11,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:11,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:11,914 INFO L87 Difference]: Start difference. First operand 5956 states and 20909 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:12,941 INFO L93 Difference]: Finished difference Result 6464 states and 22553 transitions. [2021-06-05 14:53:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:53:12,941 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:12,953 INFO L225 Difference]: With dead ends: 6464 [2021-06-05 14:53:12,953 INFO L226 Difference]: Without dead ends: 6365 [2021-06-05 14:53:12,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 699.3ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:53:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2021-06-05 14:53:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 5948. [2021-06-05 14:53:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.51252732470153) internal successors, (20889), 5947 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20889 transitions. [2021-06-05 14:53:13,040 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20889 transitions. Word has length 47 [2021-06-05 14:53:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:13,040 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20889 transitions. [2021-06-05 14:53:13,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20889 transitions. [2021-06-05 14:53:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:13,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:13,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:13,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 14:53:13,048 INFO L430 AbstractCegarLoop]: === Iteration 48 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:13,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:13,048 INFO L82 PathProgramCache]: Analyzing trace with hash 663473958, now seen corresponding path program 48 times [2021-06-05 14:53:13,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:13,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533839508] [2021-06-05 14:53:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:13,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:13,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533839508] [2021-06-05 14:53:13,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533839508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:13,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:13,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818617527] [2021-06-05 14:53:13,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:13,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:13,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:13,263 INFO L87 Difference]: Start difference. First operand 5948 states and 20889 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:14,321 INFO L93 Difference]: Finished difference Result 6385 states and 22344 transitions. [2021-06-05 14:53:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:53:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:14,333 INFO L225 Difference]: With dead ends: 6385 [2021-06-05 14:53:14,333 INFO L226 Difference]: Without dead ends: 6240 [2021-06-05 14:53:14,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 689.3ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2021-06-05 14:53:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5960. [2021-06-05 14:53:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 3.5104883369692903) internal successors, (20919), 5959 states have internal predecessors, (20919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20919 transitions. [2021-06-05 14:53:14,428 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20919 transitions. Word has length 47 [2021-06-05 14:53:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:14,428 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20919 transitions. [2021-06-05 14:53:14,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20919 transitions. [2021-06-05 14:53:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:14,436 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:14,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:14,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 14:53:14,436 INFO L430 AbstractCegarLoop]: === Iteration 49 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1279978748, now seen corresponding path program 49 times [2021-06-05 14:53:14,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:14,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444049447] [2021-06-05 14:53:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:14,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:14,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444049447] [2021-06-05 14:53:14,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444049447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:14,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:14,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:14,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906785230] [2021-06-05 14:53:14,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:14,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:14,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:14,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:14,749 INFO L87 Difference]: Start difference. First operand 5960 states and 20919 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:15,897 INFO L93 Difference]: Finished difference Result 6406 states and 22348 transitions. [2021-06-05 14:53:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:53:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:15,908 INFO L225 Difference]: With dead ends: 6406 [2021-06-05 14:53:15,909 INFO L226 Difference]: Without dead ends: 6309 [2021-06-05 14:53:15,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 829.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:53:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2021-06-05 14:53:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5966. [2021-06-05 14:53:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 5965 states have (on average 3.5094719195305952) internal successors, (20934), 5965 states have internal predecessors, (20934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20934 transitions. [2021-06-05 14:53:15,998 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20934 transitions. Word has length 47 [2021-06-05 14:53:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:15,998 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20934 transitions. [2021-06-05 14:53:15,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20934 transitions. [2021-06-05 14:53:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:16,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:16,006 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:16,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 14:53:16,007 INFO L430 AbstractCegarLoop]: === Iteration 50 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1289568038, now seen corresponding path program 50 times [2021-06-05 14:53:16,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:16,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499487269] [2021-06-05 14:53:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:16,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:16,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499487269] [2021-06-05 14:53:16,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499487269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:16,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:16,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:16,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34780374] [2021-06-05 14:53:16,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:16,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:16,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:16,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:16,237 INFO L87 Difference]: Start difference. First operand 5966 states and 20934 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:17,223 INFO L93 Difference]: Finished difference Result 6291 states and 21995 transitions. [2021-06-05 14:53:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:17,234 INFO L225 Difference]: With dead ends: 6291 [2021-06-05 14:53:17,234 INFO L226 Difference]: Without dead ends: 6170 [2021-06-05 14:53:17,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 643.6ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:53:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-06-05 14:53:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5936. [2021-06-05 14:53:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.5142375737152487) internal successors, (20857), 5935 states have internal predecessors, (20857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20857 transitions. [2021-06-05 14:53:17,321 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20857 transitions. Word has length 47 [2021-06-05 14:53:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:17,321 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20857 transitions. [2021-06-05 14:53:17,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20857 transitions. [2021-06-05 14:53:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:17,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:17,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:17,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 14:53:17,329 INFO L430 AbstractCegarLoop]: === Iteration 51 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1335783944, now seen corresponding path program 51 times [2021-06-05 14:53:17,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:17,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943137733] [2021-06-05 14:53:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:17,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:17,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943137733] [2021-06-05 14:53:17,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943137733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:17,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:17,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:53:17,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436859790] [2021-06-05 14:53:17,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:53:17,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:17,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:53:17,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:53:17,556 INFO L87 Difference]: Start difference. First operand 5936 states and 20857 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:18,523 INFO L93 Difference]: Finished difference Result 6489 states and 22676 transitions. [2021-06-05 14:53:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:53:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:18,536 INFO L225 Difference]: With dead ends: 6489 [2021-06-05 14:53:18,536 INFO L226 Difference]: Without dead ends: 6352 [2021-06-05 14:53:18,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 626.3ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 14:53:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-06-05 14:53:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 5952. [2021-06-05 14:53:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.5138632162661736) internal successors, (20911), 5951 states have internal predecessors, (20911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20911 transitions. [2021-06-05 14:53:18,628 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20911 transitions. Word has length 47 [2021-06-05 14:53:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:18,628 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20911 transitions. [2021-06-05 14:53:18,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20911 transitions. [2021-06-05 14:53:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:18,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:18,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:18,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 14:53:18,637 INFO L430 AbstractCegarLoop]: === Iteration 52 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 526843336, now seen corresponding path program 52 times [2021-06-05 14:53:18,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:18,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172728781] [2021-06-05 14:53:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:18,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:18,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172728781] [2021-06-05 14:53:18,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172728781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:18,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:18,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:18,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676628333] [2021-06-05 14:53:18,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:18,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:18,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:18,914 INFO L87 Difference]: Start difference. First operand 5952 states and 20911 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:19,848 INFO L93 Difference]: Finished difference Result 6473 states and 22620 transitions. [2021-06-05 14:53:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:19,860 INFO L225 Difference]: With dead ends: 6473 [2021-06-05 14:53:19,860 INFO L226 Difference]: Without dead ends: 6328 [2021-06-05 14:53:19,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 684.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 14:53:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-06-05 14:53:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6016. [2021-06-05 14:53:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6016 states, 6015 states have (on average 3.508395677472984) internal successors, (21103), 6015 states have internal predecessors, (21103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 21103 transitions. [2021-06-05 14:53:19,949 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 21103 transitions. Word has length 47 [2021-06-05 14:53:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:19,949 INFO L482 AbstractCegarLoop]: Abstraction has 6016 states and 21103 transitions. [2021-06-05 14:53:19,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 21103 transitions. [2021-06-05 14:53:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:19,957 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:19,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:19,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 14:53:19,957 INFO L430 AbstractCegarLoop]: === Iteration 53 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:19,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:19,957 INFO L82 PathProgramCache]: Analyzing trace with hash 253187976, now seen corresponding path program 53 times [2021-06-05 14:53:19,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:19,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778152196] [2021-06-05 14:53:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:20,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:20,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778152196] [2021-06-05 14:53:20,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778152196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:20,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:20,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:20,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712346235] [2021-06-05 14:53:20,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:20,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:20,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:20,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:20,161 INFO L87 Difference]: Start difference. First operand 6016 states and 21103 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:21,116 INFO L93 Difference]: Finished difference Result 6521 states and 22796 transitions. [2021-06-05 14:53:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:21,127 INFO L225 Difference]: With dead ends: 6521 [2021-06-05 14:53:21,127 INFO L226 Difference]: Without dead ends: 6272 [2021-06-05 14:53:21,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 606.3ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 14:53:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-06-05 14:53:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5952. [2021-06-05 14:53:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 5951 states have (on average 3.511174592505461) internal successors, (20895), 5951 states have internal predecessors, (20895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20895 transitions. [2021-06-05 14:53:21,214 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20895 transitions. Word has length 47 [2021-06-05 14:53:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:21,215 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20895 transitions. [2021-06-05 14:53:21,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20895 transitions. [2021-06-05 14:53:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:21,222 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:21,222 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:21,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 14:53:21,223 INFO L430 AbstractCegarLoop]: === Iteration 54 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1988507238, now seen corresponding path program 54 times [2021-06-05 14:53:21,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:21,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983391269] [2021-06-05 14:53:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:21,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:21,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983391269] [2021-06-05 14:53:21,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983391269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:21,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:21,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:21,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691487147] [2021-06-05 14:53:21,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:21,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:21,477 INFO L87 Difference]: Start difference. First operand 5952 states and 20895 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:22,464 INFO L93 Difference]: Finished difference Result 6409 states and 22380 transitions. [2021-06-05 14:53:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:53:22,465 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:22,476 INFO L225 Difference]: With dead ends: 6409 [2021-06-05 14:53:22,476 INFO L226 Difference]: Without dead ends: 6272 [2021-06-05 14:53:22,477 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 653.3ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 14:53:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-06-05 14:53:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5970. [2021-06-05 14:53:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 3.5081253141229687) internal successors, (20940), 5969 states have internal predecessors, (20940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20940 transitions. [2021-06-05 14:53:22,567 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20940 transitions. Word has length 47 [2021-06-05 14:53:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:22,567 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20940 transitions. [2021-06-05 14:53:22,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20940 transitions. [2021-06-05 14:53:22,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:22,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:22,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:22,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 14:53:22,575 INFO L430 AbstractCegarLoop]: === Iteration 55 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:22,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1179566630, now seen corresponding path program 55 times [2021-06-05 14:53:22,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:22,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259338247] [2021-06-05 14:53:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:22,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:22,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259338247] [2021-06-05 14:53:22,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259338247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:22,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:22,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:22,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192350826] [2021-06-05 14:53:22,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:22,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:22,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:22,837 INFO L87 Difference]: Start difference. First operand 5970 states and 20940 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:23,896 INFO L93 Difference]: Finished difference Result 6393 states and 22312 transitions. [2021-06-05 14:53:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:53:23,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:23,907 INFO L225 Difference]: With dead ends: 6393 [2021-06-05 14:53:23,907 INFO L226 Difference]: Without dead ends: 6248 [2021-06-05 14:53:23,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 716.8ms TimeCoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2021-06-05 14:53:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 5970. [2021-06-05 14:53:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5969 states have (on average 3.50712012062322) internal successors, (20934), 5969 states have internal predecessors, (20934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20934 transitions. [2021-06-05 14:53:23,994 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20934 transitions. Word has length 47 [2021-06-05 14:53:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:23,994 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20934 transitions. [2021-06-05 14:53:23,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20934 transitions. [2021-06-05 14:53:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:24,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:24,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:24,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 14:53:24,002 INFO L430 AbstractCegarLoop]: === Iteration 56 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:24,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2079462408, now seen corresponding path program 56 times [2021-06-05 14:53:24,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:24,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304869813] [2021-06-05 14:53:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:24,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:24,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304869813] [2021-06-05 14:53:24,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304869813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:24,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:24,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:24,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882790771] [2021-06-05 14:53:24,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:24,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:24,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:24,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:24,254 INFO L87 Difference]: Start difference. First operand 5970 states and 20934 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:27,528 INFO L93 Difference]: Finished difference Result 11008 states and 39096 transitions. [2021-06-05 14:53:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 14:53:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:27,548 INFO L225 Difference]: With dead ends: 11008 [2021-06-05 14:53:27,548 INFO L226 Difference]: Without dead ends: 10871 [2021-06-05 14:53:27,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 1835.3ms TimeCoverageRelationStatistics Valid=609, Invalid=6363, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 14:53:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-06-05 14:53:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 6020. [2021-06-05 14:53:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 6019 states have (on average 3.507227114138561) internal successors, (21110), 6019 states have internal predecessors, (21110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 21110 transitions. [2021-06-05 14:53:27,662 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 21110 transitions. Word has length 47 [2021-06-05 14:53:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:27,662 INFO L482 AbstractCegarLoop]: Abstraction has 6020 states and 21110 transitions. [2021-06-05 14:53:27,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 21110 transitions. [2021-06-05 14:53:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:27,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:27,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:27,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 14:53:27,670 INFO L430 AbstractCegarLoop]: === Iteration 57 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1228810500, now seen corresponding path program 57 times [2021-06-05 14:53:27,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:27,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213857247] [2021-06-05 14:53:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:27,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:27,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213857247] [2021-06-05 14:53:27,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213857247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:27,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:27,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948881608] [2021-06-05 14:53:27,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:27,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:27,894 INFO L87 Difference]: Start difference. First operand 6020 states and 21110 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:30,970 INFO L93 Difference]: Finished difference Result 11027 states and 39284 transitions. [2021-06-05 14:53:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 14:53:30,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:30,990 INFO L225 Difference]: With dead ends: 11027 [2021-06-05 14:53:30,990 INFO L226 Difference]: Without dead ends: 10920 [2021-06-05 14:53:30,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 1717.8ms TimeCoverageRelationStatistics Valid=568, Invalid=6074, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 14:53:31,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2021-06-05 14:53:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 5998. [2021-06-05 14:53:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5998 states, 5997 states have (on average 3.510255127563782) internal successors, (21051), 5997 states have internal predecessors, (21051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 21051 transitions. [2021-06-05 14:53:31,107 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 21051 transitions. Word has length 47 [2021-06-05 14:53:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:31,107 INFO L482 AbstractCegarLoop]: Abstraction has 5998 states and 21051 transitions. [2021-06-05 14:53:31,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 21051 transitions. [2021-06-05 14:53:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:31,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:31,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:31,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 14:53:31,115 INFO L430 AbstractCegarLoop]: === Iteration 58 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:31,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:31,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1385555350, now seen corresponding path program 58 times [2021-06-05 14:53:31,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:31,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530784656] [2021-06-05 14:53:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:31,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:31,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530784656] [2021-06-05 14:53:31,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530784656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:31,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:31,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:31,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954368313] [2021-06-05 14:53:31,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:31,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:31,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:31,412 INFO L87 Difference]: Start difference. First operand 5998 states and 21051 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:32,536 INFO L93 Difference]: Finished difference Result 6601 states and 22970 transitions. [2021-06-05 14:53:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:53:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:32,547 INFO L225 Difference]: With dead ends: 6601 [2021-06-05 14:53:32,547 INFO L226 Difference]: Without dead ends: 6480 [2021-06-05 14:53:32,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 821.0ms TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:53:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2021-06-05 14:53:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 6004. [2021-06-05 14:53:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6004 states, 6003 states have (on average 3.508912210561386) internal successors, (21064), 6003 states have internal predecessors, (21064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 21064 transitions. [2021-06-05 14:53:32,635 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 21064 transitions. Word has length 47 [2021-06-05 14:53:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:32,635 INFO L482 AbstractCegarLoop]: Abstraction has 6004 states and 21064 transitions. [2021-06-05 14:53:32,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 21064 transitions. [2021-06-05 14:53:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:32,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:32,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:32,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 14:53:32,643 INFO L430 AbstractCegarLoop]: === Iteration 59 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:32,643 INFO L82 PathProgramCache]: Analyzing trace with hash 185866086, now seen corresponding path program 59 times [2021-06-05 14:53:32,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:32,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914941356] [2021-06-05 14:53:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:32,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:32,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914941356] [2021-06-05 14:53:32,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914941356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:32,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:32,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:32,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117292264] [2021-06-05 14:53:32,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:32,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:32,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:32,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:32,876 INFO L87 Difference]: Start difference. First operand 6004 states and 21064 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:34,472 INFO L93 Difference]: Finished difference Result 7445 states and 26088 transitions. [2021-06-05 14:53:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 14:53:34,472 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:34,485 INFO L225 Difference]: With dead ends: 7445 [2021-06-05 14:53:34,485 INFO L226 Difference]: Without dead ends: 7201 [2021-06-05 14:53:34,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 933.3ms TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 14:53:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-06-05 14:53:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 6072. [2021-06-05 14:53:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 3.5065063416241147) internal successors, (21288), 6071 states have internal predecessors, (21288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21288 transitions. [2021-06-05 14:53:34,582 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21288 transitions. Word has length 47 [2021-06-05 14:53:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:34,582 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21288 transitions. [2021-06-05 14:53:34,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21288 transitions. [2021-06-05 14:53:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:34,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:34,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:34,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 14:53:34,593 INFO L430 AbstractCegarLoop]: === Iteration 60 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash 484757764, now seen corresponding path program 60 times [2021-06-05 14:53:34,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:34,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332642951] [2021-06-05 14:53:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:34,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:34,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332642951] [2021-06-05 14:53:34,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332642951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:34,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:34,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:34,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499011913] [2021-06-05 14:53:34,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:34,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:34,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:34,823 INFO L87 Difference]: Start difference. First operand 6072 states and 21288 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:35,954 INFO L93 Difference]: Finished difference Result 6570 states and 22873 transitions. [2021-06-05 14:53:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 14:53:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:35,965 INFO L225 Difference]: With dead ends: 6570 [2021-06-05 14:53:35,965 INFO L226 Difference]: Without dead ends: 6473 [2021-06-05 14:53:35,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 736.5ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:53:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2021-06-05 14:53:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6086. [2021-06-05 14:53:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 6085 states have (on average 3.5028759244042726) internal successors, (21315), 6085 states have internal predecessors, (21315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 21315 transitions. [2021-06-05 14:53:36,054 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 21315 transitions. Word has length 47 [2021-06-05 14:53:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:36,054 INFO L482 AbstractCegarLoop]: Abstraction has 6086 states and 21315 transitions. [2021-06-05 14:53:36,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 21315 transitions. [2021-06-05 14:53:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:36,062 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:36,062 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:36,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 14:53:36,062 INFO L430 AbstractCegarLoop]: === Iteration 61 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1240662746, now seen corresponding path program 61 times [2021-06-05 14:53:36,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:36,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298697369] [2021-06-05 14:53:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:36,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:36,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298697369] [2021-06-05 14:53:36,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298697369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:36,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:36,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:36,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330260277] [2021-06-05 14:53:36,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:36,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:36,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:36,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:36,333 INFO L87 Difference]: Start difference. First operand 6086 states and 21315 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:37,353 INFO L93 Difference]: Finished difference Result 6455 states and 22520 transitions. [2021-06-05 14:53:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:53:37,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:37,365 INFO L225 Difference]: With dead ends: 6455 [2021-06-05 14:53:37,365 INFO L226 Difference]: Without dead ends: 6350 [2021-06-05 14:53:37,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 702.3ms TimeCoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-06-05 14:53:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6072. [2021-06-05 14:53:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 3.505518036567287) internal successors, (21282), 6071 states have internal predecessors, (21282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21282 transitions. [2021-06-05 14:53:37,458 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21282 transitions. Word has length 47 [2021-06-05 14:53:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:37,458 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21282 transitions. [2021-06-05 14:53:37,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21282 transitions. [2021-06-05 14:53:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:37,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:37,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:37,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 14:53:37,466 INFO L430 AbstractCegarLoop]: === Iteration 62 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:37,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1995258442, now seen corresponding path program 62 times [2021-06-05 14:53:37,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:37,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625335681] [2021-06-05 14:53:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:37,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:37,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625335681] [2021-06-05 14:53:37,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625335681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:37,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:37,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:37,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956838715] [2021-06-05 14:53:37,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:37,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:37,702 INFO L87 Difference]: Start difference. First operand 6072 states and 21282 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:38,779 INFO L93 Difference]: Finished difference Result 6712 states and 23400 transitions. [2021-06-05 14:53:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:53:38,780 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:38,791 INFO L225 Difference]: With dead ends: 6712 [2021-06-05 14:53:38,791 INFO L226 Difference]: Without dead ends: 6527 [2021-06-05 14:53:38,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 733.7ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 14:53:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2021-06-05 14:53:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 6076. [2021-06-05 14:53:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 6075 states have (on average 3.504855967078189) internal successors, (21292), 6075 states have internal predecessors, (21292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 21292 transitions. [2021-06-05 14:53:38,883 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 21292 transitions. Word has length 47 [2021-06-05 14:53:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:38,883 INFO L482 AbstractCegarLoop]: Abstraction has 6076 states and 21292 transitions. [2021-06-05 14:53:38,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 21292 transitions. [2021-06-05 14:53:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:38,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:38,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:38,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 14:53:38,891 INFO L430 AbstractCegarLoop]: === Iteration 63 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2112750184, now seen corresponding path program 63 times [2021-06-05 14:53:38,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:38,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875496642] [2021-06-05 14:53:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:39,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:39,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875496642] [2021-06-05 14:53:39,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875496642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:39,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:39,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:39,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031915430] [2021-06-05 14:53:39,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:39,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:39,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:39,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:39,107 INFO L87 Difference]: Start difference. First operand 6076 states and 21292 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:40,248 INFO L93 Difference]: Finished difference Result 6804 states and 23603 transitions. [2021-06-05 14:53:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:53:40,248 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:40,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:40,260 INFO L225 Difference]: With dead ends: 6804 [2021-06-05 14:53:40,260 INFO L226 Difference]: Without dead ends: 6667 [2021-06-05 14:53:40,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 736.8ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 14:53:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2021-06-05 14:53:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6082. [2021-06-05 14:53:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 6081 states have (on average 3.5035356026969247) internal successors, (21305), 6081 states have internal predecessors, (21305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 21305 transitions. [2021-06-05 14:53:40,350 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 21305 transitions. Word has length 47 [2021-06-05 14:53:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:40,351 INFO L482 AbstractCegarLoop]: Abstraction has 6082 states and 21305 transitions. [2021-06-05 14:53:40,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:40,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 21305 transitions. [2021-06-05 14:53:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:40,358 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:40,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:40,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 14:53:40,358 INFO L430 AbstractCegarLoop]: === Iteration 64 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash -541328748, now seen corresponding path program 64 times [2021-06-05 14:53:40,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:40,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797735181] [2021-06-05 14:53:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:40,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:40,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797735181] [2021-06-05 14:53:40,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797735181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:40,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:40,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:40,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703873650] [2021-06-05 14:53:40,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:40,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:40,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:40,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:40,619 INFO L87 Difference]: Start difference. First operand 6082 states and 21305 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:42,953 INFO L93 Difference]: Finished difference Result 11009 states and 38579 transitions. [2021-06-05 14:53:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 14:53:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:42,972 INFO L225 Difference]: With dead ends: 11009 [2021-06-05 14:53:42,972 INFO L226 Difference]: Without dead ends: 10769 [2021-06-05 14:53:42,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 1214.6ms TimeCoverageRelationStatistics Valid=381, Invalid=4449, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 14:53:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2021-06-05 14:53:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 6106. [2021-06-05 14:53:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 3.500900900900901) internal successors, (21373), 6105 states have internal predecessors, (21373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21373 transitions. [2021-06-05 14:53:43,091 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21373 transitions. Word has length 47 [2021-06-05 14:53:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:43,091 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21373 transitions. [2021-06-05 14:53:43,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21373 transitions. [2021-06-05 14:53:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:43,100 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:43,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:43,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 14:53:43,100 INFO L430 AbstractCegarLoop]: === Iteration 65 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -242437070, now seen corresponding path program 65 times [2021-06-05 14:53:43,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:43,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006432046] [2021-06-05 14:53:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:43,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:43,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006432046] [2021-06-05 14:53:43,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006432046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:43,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:43,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:43,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98777868] [2021-06-05 14:53:43,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:43,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:43,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:43,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:43,342 INFO L87 Difference]: Start difference. First operand 6106 states and 21373 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:44,534 INFO L93 Difference]: Finished difference Result 6731 states and 23367 transitions. [2021-06-05 14:53:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:53:44,534 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:44,546 INFO L225 Difference]: With dead ends: 6731 [2021-06-05 14:53:44,546 INFO L226 Difference]: Without dead ends: 6634 [2021-06-05 14:53:44,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 805.1ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:53:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2021-06-05 14:53:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6114. [2021-06-05 14:53:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 6113 states have (on average 3.499263863896614) internal successors, (21391), 6113 states have internal predecessors, (21391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 21391 transitions. [2021-06-05 14:53:44,650 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 21391 transitions. Word has length 47 [2021-06-05 14:53:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:44,650 INFO L482 AbstractCegarLoop]: Abstraction has 6114 states and 21391 transitions. [2021-06-05 14:53:44,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 21391 transitions. [2021-06-05 14:53:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:44,660 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:44,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:44,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 14:53:44,660 INFO L430 AbstractCegarLoop]: === Iteration 66 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:44,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1967857580, now seen corresponding path program 66 times [2021-06-05 14:53:44,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:44,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459400396] [2021-06-05 14:53:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:44,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:44,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459400396] [2021-06-05 14:53:44,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459400396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:44,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:44,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269250316] [2021-06-05 14:53:44,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:44,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:44,881 INFO L87 Difference]: Start difference. First operand 6114 states and 21391 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:45,820 INFO L93 Difference]: Finished difference Result 6616 states and 23014 transitions. [2021-06-05 14:53:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:53:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:45,832 INFO L225 Difference]: With dead ends: 6616 [2021-06-05 14:53:45,832 INFO L226 Difference]: Without dead ends: 6517 [2021-06-05 14:53:45,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 626.3ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 14:53:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-06-05 14:53:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6106. [2021-06-05 14:53:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 6105 states have (on average 3.5005733005733006) internal successors, (21371), 6105 states have internal predecessors, (21371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21371 transitions. [2021-06-05 14:53:45,922 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21371 transitions. Word has length 47 [2021-06-05 14:53:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:45,922 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21371 transitions. [2021-06-05 14:53:45,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21371 transitions. [2021-06-05 14:53:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:45,930 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:45,930 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:45,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 14:53:45,930 INFO L430 AbstractCegarLoop]: === Iteration 67 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash -892113016, now seen corresponding path program 67 times [2021-06-05 14:53:45,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:45,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422205227] [2021-06-05 14:53:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:46,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:46,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422205227] [2021-06-05 14:53:46,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422205227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:46,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:46,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:46,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442425596] [2021-06-05 14:53:46,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:46,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:46,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:46,152 INFO L87 Difference]: Start difference. First operand 6106 states and 21371 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:47,125 INFO L93 Difference]: Finished difference Result 6537 states and 22805 transitions. [2021-06-05 14:53:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:53:47,126 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:47,137 INFO L225 Difference]: With dead ends: 6537 [2021-06-05 14:53:47,137 INFO L226 Difference]: Without dead ends: 6392 [2021-06-05 14:53:47,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 622.1ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 14:53:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2021-06-05 14:53:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 6118. [2021-06-05 14:53:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6117 states have (on average 3.4986104299493217) internal successors, (21401), 6117 states have internal predecessors, (21401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21401 transitions. [2021-06-05 14:53:47,232 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21401 transitions. Word has length 47 [2021-06-05 14:53:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:47,232 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21401 transitions. [2021-06-05 14:53:47,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21401 transitions. [2021-06-05 14:53:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:47,240 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:47,240 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:47,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 14:53:47,240 INFO L430 AbstractCegarLoop]: === Iteration 68 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:47,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1459401574, now seen corresponding path program 68 times [2021-06-05 14:53:47,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:47,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787827234] [2021-06-05 14:53:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:47,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:47,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787827234] [2021-06-05 14:53:47,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787827234] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:47,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:47,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:47,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925696710] [2021-06-05 14:53:47,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:47,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:47,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:47,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:47,499 INFO L87 Difference]: Start difference. First operand 6118 states and 21401 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:48,533 INFO L93 Difference]: Finished difference Result 6558 states and 22809 transitions. [2021-06-05 14:53:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:48,544 INFO L225 Difference]: With dead ends: 6558 [2021-06-05 14:53:48,544 INFO L226 Difference]: Without dead ends: 6461 [2021-06-05 14:53:48,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 698.2ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:53:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-06-05 14:53:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6124. [2021-06-05 14:53:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 3.497631879797485) internal successors, (21416), 6123 states have internal predecessors, (21416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 21416 transitions. [2021-06-05 14:53:48,634 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 21416 transitions. Word has length 47 [2021-06-05 14:53:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:48,634 INFO L482 AbstractCegarLoop]: Abstraction has 6124 states and 21416 transitions. [2021-06-05 14:53:48,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 21416 transitions. [2021-06-05 14:53:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:48,642 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:48,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:48,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 14:53:48,642 INFO L430 AbstractCegarLoop]: === Iteration 69 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:48,643 INFO L82 PathProgramCache]: Analyzing trace with hash -266018936, now seen corresponding path program 69 times [2021-06-05 14:53:48,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:48,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137792706] [2021-06-05 14:53:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:48,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:48,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137792706] [2021-06-05 14:53:48,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137792706] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:48,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:48,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:53:48,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848730312] [2021-06-05 14:53:48,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:53:48,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:53:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:53:48,898 INFO L87 Difference]: Start difference. First operand 6124 states and 21416 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:49,821 INFO L93 Difference]: Finished difference Result 6443 states and 22456 transitions. [2021-06-05 14:53:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 14:53:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:49,833 INFO L225 Difference]: With dead ends: 6443 [2021-06-05 14:53:49,833 INFO L226 Difference]: Without dead ends: 6282 [2021-06-05 14:53:49,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 633.2ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:53:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-06-05 14:53:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6054. [2021-06-05 14:53:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 6053 states have (on average 3.5081777630926814) internal successors, (21235), 6053 states have internal predecessors, (21235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 21235 transitions. [2021-06-05 14:53:49,925 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 21235 transitions. Word has length 47 [2021-06-05 14:53:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:49,925 INFO L482 AbstractCegarLoop]: Abstraction has 6054 states and 21235 transitions. [2021-06-05 14:53:49,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:49,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 21235 transitions. [2021-06-05 14:53:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:49,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:49,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:49,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 14:53:49,933 INFO L430 AbstractCegarLoop]: === Iteration 70 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1367624742, now seen corresponding path program 70 times [2021-06-05 14:53:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:49,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129137983] [2021-06-05 14:53:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:50,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:50,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129137983] [2021-06-05 14:53:50,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129137983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:50,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:50,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:53:50,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993949467] [2021-06-05 14:53:50,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:53:50,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:53:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:53:50,173 INFO L87 Difference]: Start difference. First operand 6054 states and 21235 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:51,070 INFO L93 Difference]: Finished difference Result 6791 states and 23680 transitions. [2021-06-05 14:53:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:53:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:51,082 INFO L225 Difference]: With dead ends: 6791 [2021-06-05 14:53:51,082 INFO L226 Difference]: Without dead ends: 6654 [2021-06-05 14:53:51,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 603.0ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:53:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-06-05 14:53:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6074. [2021-06-05 14:53:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6074 states, 6073 states have (on average 3.507492178494978) internal successors, (21301), 6073 states have internal predecessors, (21301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 21301 transitions. [2021-06-05 14:53:51,172 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 21301 transitions. Word has length 47 [2021-06-05 14:53:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:51,172 INFO L482 AbstractCegarLoop]: Abstraction has 6074 states and 21301 transitions. [2021-06-05 14:53:51,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 21301 transitions. [2021-06-05 14:53:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:51,180 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:51,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:51,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 14:53:51,180 INFO L430 AbstractCegarLoop]: === Iteration 71 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash 150071480, now seen corresponding path program 71 times [2021-06-05 14:53:51,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:51,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081091424] [2021-06-05 14:53:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:51,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:51,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081091424] [2021-06-05 14:53:51,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081091424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:51,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:51,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:51,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106343622] [2021-06-05 14:53:51,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:51,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:51,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:51,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:51,383 INFO L87 Difference]: Start difference. First operand 6074 states and 21301 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:52,350 INFO L93 Difference]: Finished difference Result 6850 states and 23839 transitions. [2021-06-05 14:53:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:53:52,351 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:52,362 INFO L225 Difference]: With dead ends: 6850 [2021-06-05 14:53:52,363 INFO L226 Difference]: Without dead ends: 6761 [2021-06-05 14:53:52,363 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 626.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:53:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-06-05 14:53:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6170. [2021-06-05 14:53:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 3.500891554546928) internal successors, (21597), 6169 states have internal predecessors, (21597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21597 transitions. [2021-06-05 14:53:52,455 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21597 transitions. Word has length 47 [2021-06-05 14:53:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:52,455 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21597 transitions. [2021-06-05 14:53:52,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21597 transitions. [2021-06-05 14:53:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:52,464 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:52,464 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:52,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 14:53:52,464 INFO L430 AbstractCegarLoop]: === Iteration 72 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:52,464 INFO L82 PathProgramCache]: Analyzing trace with hash 584100826, now seen corresponding path program 72 times [2021-06-05 14:53:52,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:52,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729469925] [2021-06-05 14:53:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:52,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:52,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729469925] [2021-06-05 14:53:52,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729469925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:52,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:52,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:52,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061702673] [2021-06-05 14:53:52,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:52,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:52,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:52,672 INFO L87 Difference]: Start difference. First operand 6170 states and 21597 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:53,686 INFO L93 Difference]: Finished difference Result 6839 states and 23808 transitions. [2021-06-05 14:53:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:53:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:53,698 INFO L225 Difference]: With dead ends: 6839 [2021-06-05 14:53:53,698 INFO L226 Difference]: Without dead ends: 6614 [2021-06-05 14:53:53,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 650.2ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-06-05 14:53:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6144. [2021-06-05 14:53:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.501220901839492) internal successors, (21508), 6143 states have internal predecessors, (21508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21508 transitions. [2021-06-05 14:53:53,790 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21508 transitions. Word has length 47 [2021-06-05 14:53:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:53,790 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21508 transitions. [2021-06-05 14:53:53,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21508 transitions. [2021-06-05 14:53:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:53,798 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:53,798 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:53,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 14:53:53,798 INFO L430 AbstractCegarLoop]: === Iteration 73 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:53,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2145534312, now seen corresponding path program 73 times [2021-06-05 14:53:53,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:53,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024401407] [2021-06-05 14:53:53,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:54,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:54,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024401407] [2021-06-05 14:53:54,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024401407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:54,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:54,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:54,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775566310] [2021-06-05 14:53:54,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:54,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:54,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:54,004 INFO L87 Difference]: Start difference. First operand 6144 states and 21508 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:54,975 INFO L93 Difference]: Finished difference Result 6842 states and 23813 transitions. [2021-06-05 14:53:54,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:53:54,976 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:54,987 INFO L225 Difference]: With dead ends: 6842 [2021-06-05 14:53:54,988 INFO L226 Difference]: Without dead ends: 6753 [2021-06-05 14:53:54,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 647.6ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2021-06-05 14:53:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6168. [2021-06-05 14:53:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 6167 states have (on average 3.4999189233014434) internal successors, (21584), 6167 states have internal predecessors, (21584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 21584 transitions. [2021-06-05 14:53:55,081 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 21584 transitions. Word has length 47 [2021-06-05 14:53:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:55,081 INFO L482 AbstractCegarLoop]: Abstraction has 6168 states and 21584 transitions. [2021-06-05 14:53:55,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 21584 transitions. [2021-06-05 14:53:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:55,089 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:55,089 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:55,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 14:53:55,089 INFO L430 AbstractCegarLoop]: === Iteration 74 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1715403638, now seen corresponding path program 74 times [2021-06-05 14:53:55,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:55,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161391229] [2021-06-05 14:53:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:55,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:55,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161391229] [2021-06-05 14:53:55,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161391229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:55,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:55,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:55,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274284926] [2021-06-05 14:53:55,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:55,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:55,300 INFO L87 Difference]: Start difference. First operand 6168 states and 21584 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:56,351 INFO L93 Difference]: Finished difference Result 6866 states and 23889 transitions. [2021-06-05 14:53:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:53:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:56,364 INFO L225 Difference]: With dead ends: 6866 [2021-06-05 14:53:56,364 INFO L226 Difference]: Without dead ends: 6761 [2021-06-05 14:53:56,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 665.4ms TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:53:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-06-05 14:53:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6160. [2021-06-05 14:53:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.4999188179899337) internal successors, (21556), 6159 states have internal predecessors, (21556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21556 transitions. [2021-06-05 14:53:56,460 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21556 transitions. Word has length 47 [2021-06-05 14:53:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:56,460 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21556 transitions. [2021-06-05 14:53:56,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21556 transitions. [2021-06-05 14:53:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:56,468 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:56,468 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:56,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 14:53:56,468 INFO L430 AbstractCegarLoop]: === Iteration 75 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash -442469930, now seen corresponding path program 75 times [2021-06-05 14:53:56,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:56,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75761268] [2021-06-05 14:53:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:56,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:56,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75761268] [2021-06-05 14:53:56,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75761268] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:56,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:56,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:56,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985631262] [2021-06-05 14:53:56,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:56,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:56,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:56,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:56,668 INFO L87 Difference]: Start difference. First operand 6160 states and 21556 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:53:57,673 INFO L93 Difference]: Finished difference Result 6767 states and 23590 transitions. [2021-06-05 14:53:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:53:57,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:53:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:53:57,685 INFO L225 Difference]: With dead ends: 6767 [2021-06-05 14:53:57,686 INFO L226 Difference]: Without dead ends: 6542 [2021-06-05 14:53:57,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 645.0ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:53:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-06-05 14:53:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6080. [2021-06-05 14:53:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6079 states have (on average 3.5038657673959532) internal successors, (21300), 6079 states have internal predecessors, (21300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 21300 transitions. [2021-06-05 14:53:57,779 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 21300 transitions. Word has length 47 [2021-06-05 14:53:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:53:57,779 INFO L482 AbstractCegarLoop]: Abstraction has 6080 states and 21300 transitions. [2021-06-05 14:53:57,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:53:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 21300 transitions. [2021-06-05 14:53:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:53:57,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:53:57,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:53:57,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 14:53:57,787 INFO L430 AbstractCegarLoop]: === Iteration 76 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:53:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:53:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash -386634088, now seen corresponding path program 76 times [2021-06-05 14:53:57,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:53:57,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325965093] [2021-06-05 14:53:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:53:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:53:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:53:57,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:53:57,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325965093] [2021-06-05 14:53:57,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325965093] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:53:57,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:53:57,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:53:57,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36414528] [2021-06-05 14:53:57,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:53:57,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:53:57,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:53:57,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:53:57,992 INFO L87 Difference]: Start difference. First operand 6080 states and 21300 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:00,638 INFO L93 Difference]: Finished difference Result 9849 states and 34418 transitions. [2021-06-05 14:54:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 14:54:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:00,655 INFO L225 Difference]: With dead ends: 9849 [2021-06-05 14:54:00,655 INFO L226 Difference]: Without dead ends: 9712 [2021-06-05 14:54:00,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1447.0ms TimeCoverageRelationStatistics Valid=467, Invalid=5083, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 14:54:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-06-05 14:54:00,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 6118. [2021-06-05 14:54:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 6117 states have (on average 3.5002452182442374) internal successors, (21411), 6117 states have internal predecessors, (21411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21411 transitions. [2021-06-05 14:54:00,764 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21411 transitions. Word has length 47 [2021-06-05 14:54:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:00,764 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21411 transitions. [2021-06-05 14:54:00,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21411 transitions. [2021-06-05 14:54:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:00,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:00,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:00,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 14:54:00,772 INFO L430 AbstractCegarLoop]: === Iteration 77 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash -400165510, now seen corresponding path program 77 times [2021-06-05 14:54:00,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:00,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858127359] [2021-06-05 14:54:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:00,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:00,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858127359] [2021-06-05 14:54:00,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858127359] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:00,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:00,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:00,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752629386] [2021-06-05 14:54:00,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:00,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:00,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:00,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:00,981 INFO L87 Difference]: Start difference. First operand 6118 states and 21411 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:04,007 INFO L93 Difference]: Finished difference Result 10931 states and 38497 transitions. [2021-06-05 14:54:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 14:54:04,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:04,027 INFO L225 Difference]: With dead ends: 10931 [2021-06-05 14:54:04,027 INFO L226 Difference]: Without dead ends: 10842 [2021-06-05 14:54:04,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1739.8ms TimeCoverageRelationStatistics Valid=594, Invalid=6048, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 14:54:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2021-06-05 14:54:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 6122. [2021-06-05 14:54:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 6121 states have (on average 3.499264826008822) internal successors, (21419), 6121 states have internal predecessors, (21419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 21419 transitions. [2021-06-05 14:54:04,137 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 21419 transitions. Word has length 47 [2021-06-05 14:54:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:04,137 INFO L482 AbstractCegarLoop]: Abstraction has 6122 states and 21419 transitions. [2021-06-05 14:54:04,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 21419 transitions. [2021-06-05 14:54:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:04,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:04,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:04,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 14:54:04,146 INFO L430 AbstractCegarLoop]: === Iteration 78 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:04,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:04,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1250817418, now seen corresponding path program 78 times [2021-06-05 14:54:04,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:04,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009347429] [2021-06-05 14:54:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:04,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:04,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009347429] [2021-06-05 14:54:04,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009347429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:04,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:04,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:04,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321696774] [2021-06-05 14:54:04,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:04,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:04,370 INFO L87 Difference]: Start difference. First operand 6122 states and 21419 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:07,232 INFO L93 Difference]: Finished difference Result 11010 states and 38913 transitions. [2021-06-05 14:54:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 14:54:07,232 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:07,252 INFO L225 Difference]: With dead ends: 11010 [2021-06-05 14:54:07,252 INFO L226 Difference]: Without dead ends: 10903 [2021-06-05 14:54:07,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1661.9ms TimeCoverageRelationStatistics Valid=553, Invalid=5767, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 14:54:07,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2021-06-05 14:54:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 6084. [2021-06-05 14:54:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 3.5025480848265658) internal successors, (21306), 6083 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 21306 transitions. [2021-06-05 14:54:07,373 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 21306 transitions. Word has length 47 [2021-06-05 14:54:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:07,373 INFO L482 AbstractCegarLoop]: Abstraction has 6084 states and 21306 transitions. [2021-06-05 14:54:07,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 21306 transitions. [2021-06-05 14:54:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:07,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:07,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:07,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 14:54:07,382 INFO L430 AbstractCegarLoop]: === Iteration 79 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1350183558, now seen corresponding path program 79 times [2021-06-05 14:54:07,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:07,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019545993] [2021-06-05 14:54:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:07,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:07,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019545993] [2021-06-05 14:54:07,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019545993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:07,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:07,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:07,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976171140] [2021-06-05 14:54:07,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:07,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:07,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:07,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:07,593 INFO L87 Difference]: Start difference. First operand 6084 states and 21306 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:08,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:08,728 INFO L93 Difference]: Finished difference Result 7050 states and 24382 transitions. [2021-06-05 14:54:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 14:54:08,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:08,741 INFO L225 Difference]: With dead ends: 7050 [2021-06-05 14:54:08,741 INFO L226 Difference]: Without dead ends: 6961 [2021-06-05 14:54:08,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 750.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:54:08,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-06-05 14:54:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6094. [2021-06-05 14:54:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 6093 states have (on average 3.501230920728705) internal successors, (21333), 6093 states have internal predecessors, (21333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 21333 transitions. [2021-06-05 14:54:08,834 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 21333 transitions. Word has length 47 [2021-06-05 14:54:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:08,834 INFO L482 AbstractCegarLoop]: Abstraction has 6094 states and 21333 transitions. [2021-06-05 14:54:08,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 21333 transitions. [2021-06-05 14:54:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:08,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:08,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:08,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 14:54:08,842 INFO L430 AbstractCegarLoop]: === Iteration 80 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:08,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1673845382, now seen corresponding path program 80 times [2021-06-05 14:54:08,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:08,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101154088] [2021-06-05 14:54:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:09,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:09,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101154088] [2021-06-05 14:54:09,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101154088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:09,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:09,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:09,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986928014] [2021-06-05 14:54:09,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:09,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:09,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:09,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:09,084 INFO L87 Difference]: Start difference. First operand 6094 states and 21333 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:10,304 INFO L93 Difference]: Finished difference Result 6983 states and 24195 transitions. [2021-06-05 14:54:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 14:54:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:10,316 INFO L225 Difference]: With dead ends: 6983 [2021-06-05 14:54:10,316 INFO L226 Difference]: Without dead ends: 6862 [2021-06-05 14:54:10,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 846.8ms TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 14:54:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2021-06-05 14:54:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 6090. [2021-06-05 14:54:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6089 states have (on average 3.5012317293480044) internal successors, (21319), 6089 states have internal predecessors, (21319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 21319 transitions. [2021-06-05 14:54:10,410 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 21319 transitions. Word has length 47 [2021-06-05 14:54:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:10,410 INFO L482 AbstractCegarLoop]: Abstraction has 6090 states and 21319 transitions. [2021-06-05 14:54:10,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 21319 transitions. [2021-06-05 14:54:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:10,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:10,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:10,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 14:54:10,418 INFO L430 AbstractCegarLoop]: === Iteration 81 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:10,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:10,418 INFO L82 PathProgramCache]: Analyzing trace with hash 221237878, now seen corresponding path program 81 times [2021-06-05 14:54:10,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:10,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752006811] [2021-06-05 14:54:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:10,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:10,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752006811] [2021-06-05 14:54:10,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752006811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:10,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:10,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:10,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590139642] [2021-06-05 14:54:10,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:10,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:10,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:10,647 INFO L87 Difference]: Start difference. First operand 6090 states and 21319 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:12,102 INFO L93 Difference]: Finished difference Result 7659 states and 26554 transitions. [2021-06-05 14:54:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 14:54:12,102 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:12,115 INFO L225 Difference]: With dead ends: 7659 [2021-06-05 14:54:12,115 INFO L226 Difference]: Without dead ends: 7544 [2021-06-05 14:54:12,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 870.2ms TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 14:54:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2021-06-05 14:54:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 6202. [2021-06-05 14:54:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.4960490243509112) internal successors, (21679), 6201 states have internal predecessors, (21679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21679 transitions. [2021-06-05 14:54:12,245 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21679 transitions. Word has length 47 [2021-06-05 14:54:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:12,245 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21679 transitions. [2021-06-05 14:54:12,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21679 transitions. [2021-06-05 14:54:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:12,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:12,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:12,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 14:54:12,254 INFO L430 AbstractCegarLoop]: === Iteration 82 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash 520129556, now seen corresponding path program 82 times [2021-06-05 14:54:12,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:12,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005705934] [2021-06-05 14:54:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:12,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:12,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005705934] [2021-06-05 14:54:12,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005705934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:12,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:12,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:12,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394373529] [2021-06-05 14:54:12,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:12,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:12,464 INFO L87 Difference]: Start difference. First operand 6202 states and 21679 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:13,596 INFO L93 Difference]: Finished difference Result 7055 states and 24409 transitions. [2021-06-05 14:54:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:54:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:13,608 INFO L225 Difference]: With dead ends: 7055 [2021-06-05 14:54:13,608 INFO L226 Difference]: Without dead ends: 6958 [2021-06-05 14:54:13,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 728.3ms TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:54:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2021-06-05 14:54:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6216. [2021-06-05 14:54:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 6215 states have (on average 3.4925181013676587) internal successors, (21706), 6215 states have internal predecessors, (21706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21706 transitions. [2021-06-05 14:54:13,703 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21706 transitions. Word has length 47 [2021-06-05 14:54:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:13,703 INFO L482 AbstractCegarLoop]: Abstraction has 6216 states and 21706 transitions. [2021-06-05 14:54:13,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21706 transitions. [2021-06-05 14:54:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:13,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:13,711 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:13,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 14:54:13,712 INFO L430 AbstractCegarLoop]: === Iteration 83 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:13,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1205290954, now seen corresponding path program 83 times [2021-06-05 14:54:13,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:13,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283305366] [2021-06-05 14:54:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:13,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:13,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283305366] [2021-06-05 14:54:13,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283305366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:13,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:13,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:13,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528295085] [2021-06-05 14:54:13,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:13,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:13,922 INFO L87 Difference]: Start difference. First operand 6216 states and 21706 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:14,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:14,949 INFO L93 Difference]: Finished difference Result 7031 states and 24319 transitions. [2021-06-05 14:54:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:54:14,949 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:14,962 INFO L225 Difference]: With dead ends: 7031 [2021-06-05 14:54:14,962 INFO L226 Difference]: Without dead ends: 6926 [2021-06-05 14:54:14,962 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 665.1ms TimeCoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:54:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-06-05 14:54:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6202. [2021-06-05 14:54:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6202 states, 6201 states have (on average 3.4950814384776647) internal successors, (21673), 6201 states have internal predecessors, (21673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21673 transitions. [2021-06-05 14:54:15,058 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21673 transitions. Word has length 47 [2021-06-05 14:54:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:15,059 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21673 transitions. [2021-06-05 14:54:15,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21673 transitions. [2021-06-05 14:54:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:15,067 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:15,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:15,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 14:54:15,067 INFO L430 AbstractCegarLoop]: === Iteration 84 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:15,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:15,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1114276790, now seen corresponding path program 84 times [2021-06-05 14:54:15,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:15,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859877286] [2021-06-05 14:54:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:15,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:15,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859877286] [2021-06-05 14:54:15,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859877286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:15,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:15,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:15,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560216766] [2021-06-05 14:54:15,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:15,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:15,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:15,281 INFO L87 Difference]: Start difference. First operand 6202 states and 21673 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:16,429 INFO L93 Difference]: Finished difference Result 6942 states and 24123 transitions. [2021-06-05 14:54:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 14:54:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:16,442 INFO L225 Difference]: With dead ends: 6942 [2021-06-05 14:54:16,442 INFO L226 Difference]: Without dead ends: 6853 [2021-06-05 14:54:16,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 779.4ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 14:54:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-06-05 14:54:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6222. [2021-06-05 14:54:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 3.4950972512457805) internal successors, (21743), 6221 states have internal predecessors, (21743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 21743 transitions. [2021-06-05 14:54:16,539 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 21743 transitions. Word has length 47 [2021-06-05 14:54:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:16,539 INFO L482 AbstractCegarLoop]: Abstraction has 6222 states and 21743 transitions. [2021-06-05 14:54:16,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 21743 transitions. [2021-06-05 14:54:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:16,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:16,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:16,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 14:54:16,547 INFO L430 AbstractCegarLoop]: === Iteration 85 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash 790614966, now seen corresponding path program 85 times [2021-06-05 14:54:16,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:16,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278597341] [2021-06-05 14:54:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:16,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:16,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278597341] [2021-06-05 14:54:16,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278597341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:16,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:16,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:16,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134044852] [2021-06-05 14:54:16,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:16,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:16,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:16,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:16,758 INFO L87 Difference]: Start difference. First operand 6222 states and 21743 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:17,913 INFO L93 Difference]: Finished difference Result 6970 states and 24211 transitions. [2021-06-05 14:54:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 14:54:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:17,925 INFO L225 Difference]: With dead ends: 6970 [2021-06-05 14:54:17,925 INFO L226 Difference]: Without dead ends: 6841 [2021-06-05 14:54:17,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 787.4ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 14:54:17,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2021-06-05 14:54:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6224. [2021-06-05 14:54:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4934918849429537) internal successors, (21740), 6223 states have internal predecessors, (21740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21740 transitions. [2021-06-05 14:54:18,021 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21740 transitions. Word has length 47 [2021-06-05 14:54:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:18,021 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21740 transitions. [2021-06-05 14:54:18,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21740 transitions. [2021-06-05 14:54:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:18,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:18,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:18,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 14:54:18,030 INFO L430 AbstractCegarLoop]: === Iteration 86 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash 846726420, now seen corresponding path program 86 times [2021-06-05 14:54:18,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:18,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046440625] [2021-06-05 14:54:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:18,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:18,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046440625] [2021-06-05 14:54:18,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046440625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:18,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:18,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:18,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817561070] [2021-06-05 14:54:18,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:18,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:18,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:18,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:18,248 INFO L87 Difference]: Start difference. First operand 6224 states and 21740 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:19,399 INFO L93 Difference]: Finished difference Result 6907 states and 24038 transitions. [2021-06-05 14:54:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 14:54:19,400 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:19,411 INFO L225 Difference]: With dead ends: 6907 [2021-06-05 14:54:19,411 INFO L226 Difference]: Without dead ends: 6746 [2021-06-05 14:54:19,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 782.0ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 14:54:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-06-05 14:54:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6208. [2021-06-05 14:54:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6208 states, 6207 states have (on average 3.4941195424520703) internal successors, (21688), 6207 states have internal predecessors, (21688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 21688 transitions. [2021-06-05 14:54:19,508 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 21688 transitions. Word has length 47 [2021-06-05 14:54:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:19,508 INFO L482 AbstractCegarLoop]: Abstraction has 6208 states and 21688 transitions. [2021-06-05 14:54:19,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 21688 transitions. [2021-06-05 14:54:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:19,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:19,517 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:19,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 14:54:19,517 INFO L430 AbstractCegarLoop]: === Iteration 87 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash -951643210, now seen corresponding path program 87 times [2021-06-05 14:54:19,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:19,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635751287] [2021-06-05 14:54:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:19,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:19,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635751287] [2021-06-05 14:54:19,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635751287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:19,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:19,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:19,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905337141] [2021-06-05 14:54:19,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:19,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:19,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:19,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:19,737 INFO L87 Difference]: Start difference. First operand 6208 states and 21688 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:21,497 INFO L93 Difference]: Finished difference Result 8257 states and 28674 transitions. [2021-06-05 14:54:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 14:54:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:21,511 INFO L225 Difference]: With dead ends: 8257 [2021-06-05 14:54:21,512 INFO L226 Difference]: Without dead ends: 8060 [2021-06-05 14:54:21,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1021.9ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 14:54:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-06-05 14:54:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 6144. [2021-06-05 14:54:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.49894188507244) internal successors, (21494), 6143 states have internal predecessors, (21494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21494 transitions. [2021-06-05 14:54:21,611 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21494 transitions. Word has length 47 [2021-06-05 14:54:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:21,611 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21494 transitions. [2021-06-05 14:54:21,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21494 transitions. [2021-06-05 14:54:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:21,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:21,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:21,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 14:54:21,619 INFO L430 AbstractCegarLoop]: === Iteration 88 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1726760812, now seen corresponding path program 88 times [2021-06-05 14:54:21,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:21,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159655085] [2021-06-05 14:54:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:21,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:21,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159655085] [2021-06-05 14:54:21,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159655085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:21,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:21,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633932289] [2021-06-05 14:54:21,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:21,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:21,828 INFO L87 Difference]: Start difference. First operand 6144 states and 21494 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:23,540 INFO L93 Difference]: Finished difference Result 8151 states and 28335 transitions. [2021-06-05 14:54:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 14:54:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:23,556 INFO L225 Difference]: With dead ends: 8151 [2021-06-05 14:54:23,556 INFO L226 Difference]: Without dead ends: 8056 [2021-06-05 14:54:23,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 996.5ms TimeCoverageRelationStatistics Valid=313, Invalid=3347, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 14:54:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-06-05 14:54:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6132. [2021-06-05 14:54:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.500897080411026) internal successors, (21464), 6131 states have internal predecessors, (21464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21464 transitions. [2021-06-05 14:54:23,661 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21464 transitions. Word has length 47 [2021-06-05 14:54:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:23,662 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21464 transitions. [2021-06-05 14:54:23,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21464 transitions. [2021-06-05 14:54:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:23,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:23,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:23,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 14:54:23,670 INFO L430 AbstractCegarLoop]: === Iteration 89 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:23,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1427869134, now seen corresponding path program 89 times [2021-06-05 14:54:23,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:23,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340251317] [2021-06-05 14:54:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:23,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:23,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340251317] [2021-06-05 14:54:23,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340251317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:23,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:23,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:23,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156873883] [2021-06-05 14:54:23,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:23,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:23,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:23,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:23,879 INFO L87 Difference]: Start difference. First operand 6132 states and 21464 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:24,988 INFO L93 Difference]: Finished difference Result 7016 states and 24295 transitions. [2021-06-05 14:54:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 14:54:24,988 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:25,000 INFO L225 Difference]: With dead ends: 7016 [2021-06-05 14:54:25,000 INFO L226 Difference]: Without dead ends: 6919 [2021-06-05 14:54:25,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 726.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:54:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-06-05 14:54:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6144. [2021-06-05 14:54:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.4986163112485755) internal successors, (21492), 6143 states have internal predecessors, (21492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21492 transitions. [2021-06-05 14:54:25,097 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21492 transitions. Word has length 47 [2021-06-05 14:54:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:25,097 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21492 transitions. [2021-06-05 14:54:25,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21492 transitions. [2021-06-05 14:54:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:25,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:25,105 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:25,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 14:54:25,105 INFO L430 AbstractCegarLoop]: === Iteration 90 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1141677652, now seen corresponding path program 90 times [2021-06-05 14:54:25,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:25,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426021892] [2021-06-05 14:54:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:25,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:25,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426021892] [2021-06-05 14:54:25,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426021892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:25,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:25,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:25,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400436605] [2021-06-05 14:54:25,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:25,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:25,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:25,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:25,316 INFO L87 Difference]: Start difference. First operand 6144 states and 21492 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:26,347 INFO L93 Difference]: Finished difference Result 6992 states and 24205 transitions. [2021-06-05 14:54:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:54:26,347 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:26,360 INFO L225 Difference]: With dead ends: 6992 [2021-06-05 14:54:26,360 INFO L226 Difference]: Without dead ends: 6893 [2021-06-05 14:54:26,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 685.2ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:54:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-06-05 14:54:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6136. [2021-06-05 14:54:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 3.4999185004074977) internal successors, (21472), 6135 states have internal predecessors, (21472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 21472 transitions. [2021-06-05 14:54:26,456 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 21472 transitions. Word has length 47 [2021-06-05 14:54:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:26,456 INFO L482 AbstractCegarLoop]: Abstraction has 6136 states and 21472 transitions. [2021-06-05 14:54:26,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 21472 transitions. [2021-06-05 14:54:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:26,464 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:26,464 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:26,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 14:54:26,464 INFO L430 AbstractCegarLoop]: === Iteration 91 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:26,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2077545080, now seen corresponding path program 91 times [2021-06-05 14:54:26,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:26,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828028218] [2021-06-05 14:54:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:26,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:26,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828028218] [2021-06-05 14:54:26,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828028218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:26,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:26,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:26,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065742670] [2021-06-05 14:54:26,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:26,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:26,675 INFO L87 Difference]: Start difference. First operand 6136 states and 21472 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:27,797 INFO L93 Difference]: Finished difference Result 6771 states and 23602 transitions. [2021-06-05 14:54:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:54:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:27,809 INFO L225 Difference]: With dead ends: 6771 [2021-06-05 14:54:27,809 INFO L226 Difference]: Without dead ends: 6626 [2021-06-05 14:54:27,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 727.4ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 14:54:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-06-05 14:54:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6148. [2021-06-05 14:54:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.497966487717586) internal successors, (21502), 6147 states have internal predecessors, (21502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-06-05 14:54:27,947 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-06-05 14:54:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:27,947 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-06-05 14:54:27,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-06-05 14:54:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:27,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:27,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:27,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 14:54:27,955 INFO L430 AbstractCegarLoop]: === Iteration 92 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:27,956 INFO L82 PathProgramCache]: Analyzing trace with hash 273969510, now seen corresponding path program 92 times [2021-06-05 14:54:27,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:27,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957262683] [2021-06-05 14:54:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:28,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:28,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957262683] [2021-06-05 14:54:28,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957262683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:28,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:28,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:28,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011009264] [2021-06-05 14:54:28,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:28,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:28,161 INFO L87 Difference]: Start difference. First operand 6148 states and 21502 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:29,172 INFO L93 Difference]: Finished difference Result 6867 states and 23829 transitions. [2021-06-05 14:54:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:54:29,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:29,184 INFO L225 Difference]: With dead ends: 6867 [2021-06-05 14:54:29,184 INFO L226 Difference]: Without dead ends: 6770 [2021-06-05 14:54:29,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 668.8ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:54:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-06-05 14:54:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6154. [2021-06-05 14:54:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6153 states have (on average 3.49699333658378) internal successors, (21517), 6153 states have internal predecessors, (21517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 21517 transitions. [2021-06-05 14:54:29,276 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 21517 transitions. Word has length 47 [2021-06-05 14:54:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:29,276 INFO L482 AbstractCegarLoop]: Abstraction has 6154 states and 21517 transitions. [2021-06-05 14:54:29,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 21517 transitions. [2021-06-05 14:54:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:29,285 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:29,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:29,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 14:54:29,285 INFO L430 AbstractCegarLoop]: === Iteration 93 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1451451000, now seen corresponding path program 93 times [2021-06-05 14:54:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:29,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563924062] [2021-06-05 14:54:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:29,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:29,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563924062] [2021-06-05 14:54:29,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563924062] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:29,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:29,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:29,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429347236] [2021-06-05 14:54:29,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:29,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:29,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:29,496 INFO L87 Difference]: Start difference. First operand 6154 states and 21517 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:30,484 INFO L93 Difference]: Finished difference Result 6768 states and 23524 transitions. [2021-06-05 14:54:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 14:54:30,485 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:30,496 INFO L225 Difference]: With dead ends: 6768 [2021-06-05 14:54:30,496 INFO L226 Difference]: Without dead ends: 6639 [2021-06-05 14:54:30,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 651.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:54:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-06-05 14:54:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6116. [2021-06-05 14:54:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 6115 states have (on average 3.504170073589534) internal successors, (21428), 6115 states have internal predecessors, (21428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 21428 transitions. [2021-06-05 14:54:30,586 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 21428 transitions. Word has length 47 [2021-06-05 14:54:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:30,586 INFO L482 AbstractCegarLoop]: Abstraction has 6116 states and 21428 transitions. [2021-06-05 14:54:30,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 21428 transitions. [2021-06-05 14:54:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:30,593 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:30,593 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:30,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 14:54:30,594 INFO L430 AbstractCegarLoop]: === Iteration 94 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:30,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:30,594 INFO L82 PathProgramCache]: Analyzing trace with hash 380026104, now seen corresponding path program 94 times [2021-06-05 14:54:30,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:30,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888779050] [2021-06-05 14:54:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:30,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:30,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888779050] [2021-06-05 14:54:30,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888779050] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:30,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:30,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:54:30,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391995150] [2021-06-05 14:54:30,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:54:30,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:54:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:54:30,804 INFO L87 Difference]: Start difference. First operand 6116 states and 21428 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:31,636 INFO L93 Difference]: Finished difference Result 6669 states and 23239 transitions. [2021-06-05 14:54:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 14:54:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:31,648 INFO L225 Difference]: With dead ends: 6669 [2021-06-05 14:54:31,648 INFO L226 Difference]: Without dead ends: 6532 [2021-06-05 14:54:31,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 540.6ms TimeCoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 14:54:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-06-05 14:54:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6132. [2021-06-05 14:54:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.5028543467623554) internal successors, (21476), 6131 states have internal predecessors, (21476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21476 transitions. [2021-06-05 14:54:31,770 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21476 transitions. Word has length 47 [2021-06-05 14:54:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:31,770 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21476 transitions. [2021-06-05 14:54:31,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21476 transitions. [2021-06-05 14:54:31,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:31,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:31,778 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:31,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 14:54:31,778 INFO L430 AbstractCegarLoop]: === Iteration 95 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722326, now seen corresponding path program 95 times [2021-06-05 14:54:31,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:31,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619192225] [2021-06-05 14:54:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:31,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:31,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619192225] [2021-06-05 14:54:31,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619192225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:31,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:31,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:31,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473527029] [2021-06-05 14:54:31,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:31,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:31,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:31,976 INFO L87 Difference]: Start difference. First operand 6132 states and 21476 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:32,879 INFO L93 Difference]: Finished difference Result 6728 states and 23398 transitions. [2021-06-05 14:54:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:54:32,880 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:32,891 INFO L225 Difference]: With dead ends: 6728 [2021-06-05 14:54:32,891 INFO L226 Difference]: Without dead ends: 6639 [2021-06-05 14:54:32,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 576.2ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:54:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-06-05 14:54:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6196. [2021-06-05 14:54:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.5015334947538337) internal successors, (21692), 6195 states have internal predecessors, (21692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21692 transitions. [2021-06-05 14:54:32,982 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21692 transitions. Word has length 47 [2021-06-05 14:54:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:32,982 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21692 transitions. [2021-06-05 14:54:32,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21692 transitions. [2021-06-05 14:54:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:32,990 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:32,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:32,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 14:54:32,990 INFO L430 AbstractCegarLoop]: === Iteration 96 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1963215624, now seen corresponding path program 96 times [2021-06-05 14:54:32,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:32,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159906684] [2021-06-05 14:54:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:33,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:33,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159906684] [2021-06-05 14:54:33,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159906684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:33,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:33,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:33,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575998573] [2021-06-05 14:54:33,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:33,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:33,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:33,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:33,212 INFO L87 Difference]: Start difference. First operand 6196 states and 21692 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:34,095 INFO L93 Difference]: Finished difference Result 6637 states and 23127 transitions. [2021-06-05 14:54:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 14:54:34,095 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:34,107 INFO L225 Difference]: With dead ends: 6637 [2021-06-05 14:54:34,107 INFO L226 Difference]: Without dead ends: 6508 [2021-06-05 14:54:34,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 579.5ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 14:54:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-06-05 14:54:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6196. [2021-06-05 14:54:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4976594027441483) internal successors, (21668), 6195 states have internal predecessors, (21668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-06-05 14:54:34,200 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-06-05 14:54:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:34,200 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-06-05 14:54:34,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-06-05 14:54:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:34,209 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:34,209 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:34,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 14:54:34,209 INFO L430 AbstractCegarLoop]: === Iteration 97 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash -401782138, now seen corresponding path program 97 times [2021-06-05 14:54:34,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:34,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385243549] [2021-06-05 14:54:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:34,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:34,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385243549] [2021-06-05 14:54:34,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385243549] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:34,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:34,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:34,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648054228] [2021-06-05 14:54:34,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:34,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:34,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:34,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:34,445 INFO L87 Difference]: Start difference. First operand 6196 states and 21668 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:35,357 INFO L93 Difference]: Finished difference Result 6680 states and 23238 transitions. [2021-06-05 14:54:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:54:35,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:35,370 INFO L225 Difference]: With dead ends: 6680 [2021-06-05 14:54:35,370 INFO L226 Difference]: Without dead ends: 6591 [2021-06-05 14:54:35,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 641.1ms TimeCoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 14:54:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-06-05 14:54:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6196. [2021-06-05 14:54:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4976594027441483) internal successors, (21668), 6195 states have internal predecessors, (21668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-06-05 14:54:35,465 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-06-05 14:54:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:35,465 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-06-05 14:54:35,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-06-05 14:54:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:35,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:35,517 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:35,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 14:54:35,517 INFO L430 AbstractCegarLoop]: === Iteration 98 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:35,517 INFO L82 PathProgramCache]: Analyzing trace with hash 32247208, now seen corresponding path program 98 times [2021-06-05 14:54:35,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:35,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148320868] [2021-06-05 14:54:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:35,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:35,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148320868] [2021-06-05 14:54:35,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148320868] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:35,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:35,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:35,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540655360] [2021-06-05 14:54:35,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:35,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:35,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:35,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:35,712 INFO L87 Difference]: Start difference. First operand 6196 states and 21668 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:36,603 INFO L93 Difference]: Finished difference Result 6688 states and 23266 transitions. [2021-06-05 14:54:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:54:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:36,615 INFO L225 Difference]: With dead ends: 6688 [2021-06-05 14:54:36,615 INFO L226 Difference]: Without dead ends: 6583 [2021-06-05 14:54:36,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 597.4ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:54:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-06-05 14:54:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6212. [2021-06-05 14:54:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.4963773949444534) internal successors, (21716), 6211 states have internal predecessors, (21716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:36,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21716 transitions. [2021-06-05 14:54:36,709 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21716 transitions. Word has length 47 [2021-06-05 14:54:36,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:36,709 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21716 transitions. [2021-06-05 14:54:36,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:36,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21716 transitions. [2021-06-05 14:54:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:36,718 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:36,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:36,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 14:54:36,718 INFO L430 AbstractCegarLoop]: === Iteration 99 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:36,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1305180916, now seen corresponding path program 99 times [2021-06-05 14:54:36,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:36,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107207123] [2021-06-05 14:54:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:36,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:36,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107207123] [2021-06-05 14:54:36,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107207123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:36,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:36,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:36,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579760952] [2021-06-05 14:54:36,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:36,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:36,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:36,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:36,906 INFO L87 Difference]: Start difference. First operand 6212 states and 21716 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:37,802 INFO L93 Difference]: Finished difference Result 6605 states and 23015 transitions. [2021-06-05 14:54:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 14:54:37,803 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:37,814 INFO L225 Difference]: With dead ends: 6605 [2021-06-05 14:54:37,814 INFO L226 Difference]: Without dead ends: 6352 [2021-06-05 14:54:37,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 571.1ms TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:54:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-06-05 14:54:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6104. [2021-06-05 14:54:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.5058168114042276) internal successors, (21396), 6103 states have internal predecessors, (21396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21396 transitions. [2021-06-05 14:54:37,906 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21396 transitions. Word has length 47 [2021-06-05 14:54:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:37,906 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21396 transitions. [2021-06-05 14:54:37,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21396 transitions. [2021-06-05 14:54:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:37,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:37,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:37,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 14:54:37,915 INFO L430 AbstractCegarLoop]: === Iteration 100 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:37,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:37,915 INFO L82 PathProgramCache]: Analyzing trace with hash 851399496, now seen corresponding path program 100 times [2021-06-05 14:54:37,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:37,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088475292] [2021-06-05 14:54:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:38,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:38,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088475292] [2021-06-05 14:54:38,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088475292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:38,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:38,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:54:38,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196567856] [2021-06-05 14:54:38,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:54:38,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:54:38,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:54:38,124 INFO L87 Difference]: Start difference. First operand 6104 states and 21396 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:38,892 INFO L93 Difference]: Finished difference Result 6681 states and 23265 transitions. [2021-06-05 14:54:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 14:54:38,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:38,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:38,905 INFO L225 Difference]: With dead ends: 6681 [2021-06-05 14:54:38,905 INFO L226 Difference]: Without dead ends: 6544 [2021-06-05 14:54:38,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 523.3ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 14:54:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2021-06-05 14:54:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6160. [2021-06-05 14:54:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.5012177301509984) internal successors, (21564), 6159 states have internal predecessors, (21564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21564 transitions. [2021-06-05 14:54:38,999 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21564 transitions. Word has length 47 [2021-06-05 14:54:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:38,999 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21564 transitions. [2021-06-05 14:54:38,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21564 transitions. [2021-06-05 14:54:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:39,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:39,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:39,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 14:54:39,008 INFO L430 AbstractCegarLoop]: === Iteration 101 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:39,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:39,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1568967496, now seen corresponding path program 101 times [2021-06-05 14:54:39,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:39,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888653594] [2021-06-05 14:54:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:39,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:39,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888653594] [2021-06-05 14:54:39,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888653594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:39,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:39,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:39,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541393995] [2021-06-05 14:54:39,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:39,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:39,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:39,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:39,213 INFO L87 Difference]: Start difference. First operand 6160 states and 21564 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:40,088 INFO L93 Difference]: Finished difference Result 6740 states and 23424 transitions. [2021-06-05 14:54:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 14:54:40,089 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:40,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:40,101 INFO L225 Difference]: With dead ends: 6740 [2021-06-05 14:54:40,101 INFO L226 Difference]: Without dead ends: 6651 [2021-06-05 14:54:40,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 549.1ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 14:54:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-06-05 14:54:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6224. [2021-06-05 14:54:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4999196529005303) internal successors, (21780), 6223 states have internal predecessors, (21780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21780 transitions. [2021-06-05 14:54:40,197 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21780 transitions. Word has length 47 [2021-06-05 14:54:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:40,197 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21780 transitions. [2021-06-05 14:54:40,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21780 transitions. [2021-06-05 14:54:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:40,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:40,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:40,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 14:54:40,205 INFO L430 AbstractCegarLoop]: === Iteration 102 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash -115495190, now seen corresponding path program 102 times [2021-06-05 14:54:40,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:40,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020430883] [2021-06-05 14:54:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:40,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:40,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020430883] [2021-06-05 14:54:40,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020430883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:40,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:40,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:40,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442741952] [2021-06-05 14:54:40,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:40,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:40,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:40,394 INFO L87 Difference]: Start difference. First operand 6224 states and 21780 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:41,228 INFO L93 Difference]: Finished difference Result 6649 states and 23153 transitions. [2021-06-05 14:54:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 14:54:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:41,239 INFO L225 Difference]: With dead ends: 6649 [2021-06-05 14:54:41,239 INFO L226 Difference]: Without dead ends: 6520 [2021-06-05 14:54:41,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 525.6ms TimeCoverageRelationStatistics Valid=141, Invalid=1341, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 14:54:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-06-05 14:54:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 6224. [2021-06-05 14:54:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4960629921259843) internal successors, (21756), 6223 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-06-05 14:54:41,333 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-06-05 14:54:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:41,333 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-06-05 14:54:41,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-06-05 14:54:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:41,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:41,341 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:41,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 14:54:41,341 INFO L430 AbstractCegarLoop]: === Iteration 103 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:41,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1928645226, now seen corresponding path program 103 times [2021-06-05 14:54:41,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:41,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890793781] [2021-06-05 14:54:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:41,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:41,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890793781] [2021-06-05 14:54:41,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890793781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:41,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:41,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:41,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297423117] [2021-06-05 14:54:41,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:41,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:41,530 INFO L87 Difference]: Start difference. First operand 6224 states and 21756 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:42,389 INFO L93 Difference]: Finished difference Result 6692 states and 23264 transitions. [2021-06-05 14:54:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 14:54:42,389 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:42,401 INFO L225 Difference]: With dead ends: 6692 [2021-06-05 14:54:42,401 INFO L226 Difference]: Without dead ends: 6603 [2021-06-05 14:54:42,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 567.2ms TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:54:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2021-06-05 14:54:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6224. [2021-06-05 14:54:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6224 states, 6223 states have (on average 3.4960629921259843) internal successors, (21756), 6223 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-06-05 14:54:42,491 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-06-05 14:54:42,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:42,491 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-06-05 14:54:42,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-06-05 14:54:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:42,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:42,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:42,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 14:54:42,500 INFO L430 AbstractCegarLoop]: === Iteration 104 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash 244182540, now seen corresponding path program 104 times [2021-06-05 14:54:42,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:42,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014314596] [2021-06-05 14:54:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:42,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:42,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014314596] [2021-06-05 14:54:42,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014314596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:42,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:42,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:42,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498164016] [2021-06-05 14:54:42,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:42,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:42,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:42,693 INFO L87 Difference]: Start difference. First operand 6224 states and 21756 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:43,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:43,528 INFO L93 Difference]: Finished difference Result 6700 states and 23292 transitions. [2021-06-05 14:54:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 14:54:43,528 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:43,539 INFO L225 Difference]: With dead ends: 6700 [2021-06-05 14:54:43,540 INFO L226 Difference]: Without dead ends: 6595 [2021-06-05 14:54:43,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 542.4ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 14:54:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2021-06-05 14:54:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6240. [2021-06-05 14:54:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 6239 states have (on average 3.494790831864081) internal successors, (21804), 6239 states have internal predecessors, (21804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 21804 transitions. [2021-06-05 14:54:43,633 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 21804 transitions. Word has length 47 [2021-06-05 14:54:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:43,633 INFO L482 AbstractCegarLoop]: Abstraction has 6240 states and 21804 transitions. [2021-06-05 14:54:43,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 21804 transitions. [2021-06-05 14:54:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:43,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:43,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:43,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 14:54:43,643 INFO L430 AbstractCegarLoop]: === Iteration 105 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:43,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879960, now seen corresponding path program 105 times [2021-06-05 14:54:43,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:43,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280785293] [2021-06-05 14:54:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:43,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:43,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280785293] [2021-06-05 14:54:43,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280785293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:43,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:43,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:43,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405178219] [2021-06-05 14:54:43,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:43,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:43,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:43,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:43,832 INFO L87 Difference]: Start difference. First operand 6240 states and 21804 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:44,622 INFO L93 Difference]: Finished difference Result 6593 states and 22965 transitions. [2021-06-05 14:54:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 14:54:44,623 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:44,633 INFO L225 Difference]: With dead ends: 6593 [2021-06-05 14:54:44,633 INFO L226 Difference]: Without dead ends: 6320 [2021-06-05 14:54:44,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 511.4ms TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 14:54:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-06-05 14:54:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 6112. [2021-06-05 14:54:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 6111 states have (on average 3.503845524464081) internal successors, (21412), 6111 states have internal predecessors, (21412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 21412 transitions. [2021-06-05 14:54:44,724 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 21412 transitions. Word has length 47 [2021-06-05 14:54:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:44,724 INFO L482 AbstractCegarLoop]: Abstraction has 6112 states and 21412 transitions. [2021-06-05 14:54:44,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 21412 transitions. [2021-06-05 14:54:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:44,731 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:44,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:44,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 14:54:44,732 INFO L430 AbstractCegarLoop]: === Iteration 106 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:44,732 INFO L82 PathProgramCache]: Analyzing trace with hash 3597688, now seen corresponding path program 106 times [2021-06-05 14:54:44,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:44,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490055926] [2021-06-05 14:54:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:44,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:44,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490055926] [2021-06-05 14:54:44,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490055926] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:44,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:44,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:54:44,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20633448] [2021-06-05 14:54:44,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:54:44,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:44,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:54:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:54:44,911 INFO L87 Difference]: Start difference. First operand 6112 states and 21412 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:45,730 INFO L93 Difference]: Finished difference Result 6837 states and 23807 transitions. [2021-06-05 14:54:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:54:45,730 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:45,742 INFO L225 Difference]: With dead ends: 6837 [2021-06-05 14:54:45,742 INFO L226 Difference]: Without dead ends: 6700 [2021-06-05 14:54:45,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 528.0ms TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 14:54:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-06-05 14:54:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6132. [2021-06-05 14:54:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.5031805578209103) internal successors, (21478), 6131 states have internal predecessors, (21478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21478 transitions. [2021-06-05 14:54:45,835 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21478 transitions. Word has length 47 [2021-06-05 14:54:45,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:45,836 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21478 transitions. [2021-06-05 14:54:45,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21478 transitions. [2021-06-05 14:54:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:45,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:45,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:45,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 14:54:45,844 INFO L430 AbstractCegarLoop]: === Iteration 107 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:45,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1521293910, now seen corresponding path program 107 times [2021-06-05 14:54:45,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:45,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443089676] [2021-06-05 14:54:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:46,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:46,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443089676] [2021-06-05 14:54:46,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443089676] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:46,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:46,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:46,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050764586] [2021-06-05 14:54:46,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:46,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:46,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:46,032 INFO L87 Difference]: Start difference. First operand 6132 states and 21478 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:46,967 INFO L93 Difference]: Finished difference Result 6896 states and 23966 transitions. [2021-06-05 14:54:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:54:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:46,979 INFO L225 Difference]: With dead ends: 6896 [2021-06-05 14:54:46,979 INFO L226 Difference]: Without dead ends: 6807 [2021-06-05 14:54:46,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 589.6ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 14:54:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-06-05 14:54:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6196. [2021-06-05 14:54:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.501856335754641) internal successors, (21694), 6195 states have internal predecessors, (21694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21694 transitions. [2021-06-05 14:54:47,071 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21694 transitions. Word has length 47 [2021-06-05 14:54:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:47,071 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21694 transitions. [2021-06-05 14:54:47,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21694 transitions. [2021-06-05 14:54:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:47,080 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:47,080 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:47,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 14:54:47,080 INFO L430 AbstractCegarLoop]: === Iteration 108 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1955323256, now seen corresponding path program 108 times [2021-06-05 14:54:47,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:47,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60986328] [2021-06-05 14:54:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:47,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:47,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60986328] [2021-06-05 14:54:47,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60986328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:47,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:47,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:47,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13037685] [2021-06-05 14:54:47,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:47,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:47,279 INFO L87 Difference]: Start difference. First operand 6196 states and 21694 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:48,224 INFO L93 Difference]: Finished difference Result 6805 states and 23695 transitions. [2021-06-05 14:54:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:54:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:48,236 INFO L225 Difference]: With dead ends: 6805 [2021-06-05 14:54:48,237 INFO L226 Difference]: Without dead ends: 6676 [2021-06-05 14:54:48,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 588.7ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:54:48,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-06-05 14:54:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6196. [2021-06-05 14:54:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4979822437449557) internal successors, (21670), 6195 states have internal predecessors, (21670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-06-05 14:54:48,331 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-06-05 14:54:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:48,331 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-06-05 14:54:48,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-06-05 14:54:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:48,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:48,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:48,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 14:54:48,340 INFO L430 AbstractCegarLoop]: === Iteration 109 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:48,340 INFO L82 PathProgramCache]: Analyzing trace with hash -778210554, now seen corresponding path program 109 times [2021-06-05 14:54:48,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:48,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450726318] [2021-06-05 14:54:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:48,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:48,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450726318] [2021-06-05 14:54:48,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450726318] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:48,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:48,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:48,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574053586] [2021-06-05 14:54:48,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:48,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:48,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:48,531 INFO L87 Difference]: Start difference. First operand 6196 states and 21670 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:49,486 INFO L93 Difference]: Finished difference Result 6944 states and 24142 transitions. [2021-06-05 14:54:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:54:49,486 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:49,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:49,498 INFO L225 Difference]: With dead ends: 6944 [2021-06-05 14:54:49,499 INFO L226 Difference]: Without dead ends: 6855 [2021-06-05 14:54:49,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 623.3ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:54:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2021-06-05 14:54:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6196. [2021-06-05 14:54:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6196 states, 6195 states have (on average 3.4979822437449557) internal successors, (21670), 6195 states have internal predecessors, (21670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-06-05 14:54:49,595 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-06-05 14:54:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:49,595 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-06-05 14:54:49,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-06-05 14:54:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:49,603 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:49,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:49,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 14:54:49,603 INFO L430 AbstractCegarLoop]: === Iteration 110 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:49,604 INFO L82 PathProgramCache]: Analyzing trace with hash -344181208, now seen corresponding path program 110 times [2021-06-05 14:54:49,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:49,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624286915] [2021-06-05 14:54:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:49,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:49,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624286915] [2021-06-05 14:54:49,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624286915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:49,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:49,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:49,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195087968] [2021-06-05 14:54:49,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:49,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:49,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:49,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:49,813 INFO L87 Difference]: Start difference. First operand 6196 states and 21670 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:50,780 INFO L93 Difference]: Finished difference Result 6952 states and 24170 transitions. [2021-06-05 14:54:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:54:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:50,792 INFO L225 Difference]: With dead ends: 6952 [2021-06-05 14:54:50,792 INFO L226 Difference]: Without dead ends: 6847 [2021-06-05 14:54:50,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 637.5ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 14:54:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2021-06-05 14:54:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6212. [2021-06-05 14:54:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.496699404282724) internal successors, (21718), 6211 states have internal predecessors, (21718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21718 transitions. [2021-06-05 14:54:50,882 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21718 transitions. Word has length 47 [2021-06-05 14:54:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:50,882 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21718 transitions. [2021-06-05 14:54:50,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21718 transitions. [2021-06-05 14:54:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:50,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:50,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:50,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 14:54:50,891 INFO L430 AbstractCegarLoop]: === Iteration 111 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 928752500, now seen corresponding path program 111 times [2021-06-05 14:54:50,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:50,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428977876] [2021-06-05 14:54:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:51,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:51,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428977876] [2021-06-05 14:54:51,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428977876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:51,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:51,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:51,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976471572] [2021-06-05 14:54:51,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:51,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:51,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:51,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:51,087 INFO L87 Difference]: Start difference. First operand 6212 states and 21718 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:52,035 INFO L93 Difference]: Finished difference Result 6861 states and 23891 transitions. [2021-06-05 14:54:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 14:54:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:52,047 INFO L225 Difference]: With dead ends: 6861 [2021-06-05 14:54:52,048 INFO L226 Difference]: Without dead ends: 6636 [2021-06-05 14:54:52,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 613.0ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:54:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-06-05 14:54:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6132. [2021-06-05 14:54:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.500570869352471) internal successors, (21462), 6131 states have internal predecessors, (21462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21462 transitions. [2021-06-05 14:54:52,145 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21462 transitions. Word has length 47 [2021-06-05 14:54:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:52,145 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21462 transitions. [2021-06-05 14:54:52,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21462 transitions. [2021-06-05 14:54:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:52,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:52,153 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:52,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 14:54:52,153 INFO L430 AbstractCegarLoop]: === Iteration 112 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash 818403224, now seen corresponding path program 112 times [2021-06-05 14:54:52,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:52,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396677793] [2021-06-05 14:54:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:52,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:52,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396677793] [2021-06-05 14:54:52,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396677793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:52,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:52,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:52,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049361043] [2021-06-05 14:54:52,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:52,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:52,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:52,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:52,369 INFO L87 Difference]: Start difference. First operand 6132 states and 21462 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:53,263 INFO L93 Difference]: Finished difference Result 6885 states and 23895 transitions. [2021-06-05 14:54:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 14:54:53,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:53,275 INFO L225 Difference]: With dead ends: 6885 [2021-06-05 14:54:53,275 INFO L226 Difference]: Without dead ends: 6748 [2021-06-05 14:54:53,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 596.3ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:54:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-06-05 14:54:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6138. [2021-06-05 14:54:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.500570311226984) internal successors, (21483), 6137 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-06-05 14:54:53,369 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-06-05 14:54:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:53,369 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-06-05 14:54:53,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-06-05 14:54:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:53,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:53,377 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:53,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 14:54:53,377 INFO L430 AbstractCegarLoop]: === Iteration 113 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:53,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1958867850, now seen corresponding path program 113 times [2021-06-05 14:54:53,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:53,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595559169] [2021-06-05 14:54:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:53,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:53,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595559169] [2021-06-05 14:54:53,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595559169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:53,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:53,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:53,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042696400] [2021-06-05 14:54:53,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:53,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:53,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:53,585 INFO L87 Difference]: Start difference. First operand 6138 states and 21483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:54,605 INFO L93 Difference]: Finished difference Result 7035 states and 24317 transitions. [2021-06-05 14:54:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:54:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:54,617 INFO L225 Difference]: With dead ends: 7035 [2021-06-05 14:54:54,617 INFO L226 Difference]: Without dead ends: 6946 [2021-06-05 14:54:54,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 687.6ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:54:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-06-05 14:54:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6138. [2021-06-05 14:54:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.500570311226984) internal successors, (21483), 6137 states have internal predecessors, (21483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-06-05 14:54:54,710 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-06-05 14:54:54,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:54,710 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-06-05 14:54:54,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:54,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-06-05 14:54:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:54,718 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:54,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:54,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 14:54:54,719 INFO L430 AbstractCegarLoop]: === Iteration 114 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1524838504, now seen corresponding path program 114 times [2021-06-05 14:54:54,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:54,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362552577] [2021-06-05 14:54:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:54,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:54,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362552577] [2021-06-05 14:54:54,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362552577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:54,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:54,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:54,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465222818] [2021-06-05 14:54:54,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:54,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:54,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:54,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:54,928 INFO L87 Difference]: Start difference. First operand 6138 states and 21483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:55,889 INFO L93 Difference]: Finished difference Result 6944 states and 24046 transitions. [2021-06-05 14:54:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:54:55,889 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:55,901 INFO L225 Difference]: With dead ends: 6944 [2021-06-05 14:54:55,901 INFO L226 Difference]: Without dead ends: 6815 [2021-06-05 14:54:55,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 623.7ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:54:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-06-05 14:54:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6138. [2021-06-05 14:54:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 6137 states have (on average 3.4995926348378688) internal successors, (21477), 6137 states have internal predecessors, (21477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21477 transitions. [2021-06-05 14:54:55,995 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21477 transitions. Word has length 47 [2021-06-05 14:54:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:55,995 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21477 transitions. [2021-06-05 14:54:55,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21477 transitions. [2021-06-05 14:54:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:56,003 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:56,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:56,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 14:54:56,003 INFO L430 AbstractCegarLoop]: === Iteration 115 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:56,004 INFO L82 PathProgramCache]: Analyzing trace with hash 984588342, now seen corresponding path program 115 times [2021-06-05 14:54:56,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:56,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669598898] [2021-06-05 14:54:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:56,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:56,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669598898] [2021-06-05 14:54:56,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669598898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:56,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:56,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:54:56,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106525017] [2021-06-05 14:54:56,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:54:56,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:54:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:54:56,202 INFO L87 Difference]: Start difference. First operand 6138 states and 21477 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:54:58,677 INFO L93 Difference]: Finished difference Result 9355 states and 32755 transitions. [2021-06-05 14:54:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 14:54:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:54:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:54:58,693 INFO L225 Difference]: With dead ends: 9355 [2021-06-05 14:54:58,693 INFO L226 Difference]: Without dead ends: 9218 [2021-06-05 14:54:58,694 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1310.6ms TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 14:54:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-06-05 14:54:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 6184. [2021-06-05 14:54:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 3.495390587093644) internal successors, (21612), 6183 states have internal predecessors, (21612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21612 transitions. [2021-06-05 14:54:58,797 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21612 transitions. Word has length 47 [2021-06-05 14:54:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:54:58,797 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21612 transitions. [2021-06-05 14:54:58,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:54:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21612 transitions. [2021-06-05 14:54:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:54:58,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:54:58,805 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:54:58,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 14:54:58,806 INFO L430 AbstractCegarLoop]: === Iteration 116 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:54:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:54:58,806 INFO L82 PathProgramCache]: Analyzing trace with hash 971056920, now seen corresponding path program 116 times [2021-06-05 14:54:58,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:54:58,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488879672] [2021-06-05 14:54:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:54:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:54:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:54:59,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:54:59,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488879672] [2021-06-05 14:54:59,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488879672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:54:59,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:54:59,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:54:59,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646735715] [2021-06-05 14:54:59,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:54:59,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:54:59,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:54:59,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:54:59,027 INFO L87 Difference]: Start difference. First operand 6184 states and 21612 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:01,746 INFO L93 Difference]: Finished difference Result 10525 states and 37110 transitions. [2021-06-05 14:55:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 14:55:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:01,770 INFO L225 Difference]: With dead ends: 10525 [2021-06-05 14:55:01,770 INFO L226 Difference]: Without dead ends: 10436 [2021-06-05 14:55:01,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1606.6ms TimeCoverageRelationStatistics Valid=531, Invalid=5019, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 14:55:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10436 states. [2021-06-05 14:55:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10436 to 6188. [2021-06-05 14:55:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 6187 states have (on average 3.4944237918215615) internal successors, (21620), 6187 states have internal predecessors, (21620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21620 transitions. [2021-06-05 14:55:01,899 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21620 transitions. Word has length 47 [2021-06-05 14:55:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:01,899 INFO L482 AbstractCegarLoop]: Abstraction has 6188 states and 21620 transitions. [2021-06-05 14:55:01,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21620 transitions. [2021-06-05 14:55:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:01,908 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:01,908 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:01,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 14:55:01,908 INFO L430 AbstractCegarLoop]: === Iteration 117 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:01,909 INFO L82 PathProgramCache]: Analyzing trace with hash 120405012, now seen corresponding path program 117 times [2021-06-05 14:55:01,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:01,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544410819] [2021-06-05 14:55:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:02,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:02,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544410819] [2021-06-05 14:55:02,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544410819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:02,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:02,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:02,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917589046] [2021-06-05 14:55:02,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:02,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:02,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:02,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:02,131 INFO L87 Difference]: Start difference. First operand 6188 states and 21620 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:04,806 INFO L93 Difference]: Finished difference Result 10604 states and 37526 transitions. [2021-06-05 14:55:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 14:55:04,807 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:04,826 INFO L225 Difference]: With dead ends: 10604 [2021-06-05 14:55:04,826 INFO L226 Difference]: Without dead ends: 10497 [2021-06-05 14:55:04,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1506.0ms TimeCoverageRelationStatistics Valid=484, Invalid=4628, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 14:55:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-06-05 14:55:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 6146. [2021-06-05 14:55:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 6145 states have (on average 3.497965825874695) internal successors, (21495), 6145 states have internal predecessors, (21495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 21495 transitions. [2021-06-05 14:55:04,946 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 21495 transitions. Word has length 47 [2021-06-05 14:55:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:04,947 INFO L482 AbstractCegarLoop]: Abstraction has 6146 states and 21495 transitions. [2021-06-05 14:55:04,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 21495 transitions. [2021-06-05 14:55:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:04,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:04,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:04,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 14:55:04,955 INFO L430 AbstractCegarLoop]: === Iteration 118 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:04,955 INFO L82 PathProgramCache]: Analyzing trace with hash 21038872, now seen corresponding path program 118 times [2021-06-05 14:55:04,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:04,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800600625] [2021-06-05 14:55:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:05,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:05,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800600625] [2021-06-05 14:55:05,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800600625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:05,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:05,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:05,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543058041] [2021-06-05 14:55:05,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:05,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:05,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:05,191 INFO L87 Difference]: Start difference. First operand 6146 states and 21495 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:06,266 INFO L93 Difference]: Finished difference Result 7096 states and 24509 transitions. [2021-06-05 14:55:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 14:55:06,266 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:06,278 INFO L225 Difference]: With dead ends: 7096 [2021-06-05 14:55:06,279 INFO L226 Difference]: Without dead ends: 7007 [2021-06-05 14:55:06,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 741.3ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:55:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-06-05 14:55:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6148. [2021-06-05 14:55:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.497966487717586) internal successors, (21502), 6147 states have internal predecessors, (21502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-06-05 14:55:06,374 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-06-05 14:55:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:06,374 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-06-05 14:55:06,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-06-05 14:55:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:06,382 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:06,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:06,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 14:55:06,382 INFO L430 AbstractCegarLoop]: === Iteration 119 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:06,383 INFO L82 PathProgramCache]: Analyzing trace with hash -302622952, now seen corresponding path program 119 times [2021-06-05 14:55:06,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:06,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521593316] [2021-06-05 14:55:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:06,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:06,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521593316] [2021-06-05 14:55:06,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521593316] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:06,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:06,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:06,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106308421] [2021-06-05 14:55:06,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:06,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:06,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:06,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:06,592 INFO L87 Difference]: Start difference. First operand 6148 states and 21502 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:07,652 INFO L93 Difference]: Finished difference Result 7104 states and 24537 transitions. [2021-06-05 14:55:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:55:07,652 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:07,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:07,665 INFO L225 Difference]: With dead ends: 7104 [2021-06-05 14:55:07,665 INFO L226 Difference]: Without dead ends: 6999 [2021-06-05 14:55:07,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 684.8ms TimeCoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:55:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-06-05 14:55:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6148. [2021-06-05 14:55:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.4976411257523994) internal successors, (21500), 6147 states have internal predecessors, (21500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21500 transitions. [2021-06-05 14:55:07,767 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21500 transitions. Word has length 47 [2021-06-05 14:55:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:07,767 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21500 transitions. [2021-06-05 14:55:07,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21500 transitions. [2021-06-05 14:55:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:07,775 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:07,775 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:07,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 14:55:07,776 INFO L430 AbstractCegarLoop]: === Iteration 120 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:07,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1927389386, now seen corresponding path program 120 times [2021-06-05 14:55:07,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:07,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688463404] [2021-06-05 14:55:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:07,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:07,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688463404] [2021-06-05 14:55:07,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688463404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:07,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:07,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:07,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978341121] [2021-06-05 14:55:07,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:07,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:07,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:07,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:07,986 INFO L87 Difference]: Start difference. First operand 6148 states and 21500 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:09,311 INFO L93 Difference]: Finished difference Result 7685 states and 26629 transitions. [2021-06-05 14:55:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 14:55:09,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:09,325 INFO L225 Difference]: With dead ends: 7685 [2021-06-05 14:55:09,325 INFO L226 Difference]: Without dead ends: 7596 [2021-06-05 14:55:09,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 802.0ms TimeCoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 14:55:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-06-05 14:55:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6252. [2021-06-05 14:55:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 3.493201087825948) internal successors, (21836), 6251 states have internal predecessors, (21836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21836 transitions. [2021-06-05 14:55:09,425 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21836 transitions. Word has length 47 [2021-06-05 14:55:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:09,425 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21836 transitions. [2021-06-05 14:55:09,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21836 transitions. [2021-06-05 14:55:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:09,434 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:09,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:09,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 14:55:09,434 INFO L430 AbstractCegarLoop]: === Iteration 121 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1592460308, now seen corresponding path program 121 times [2021-06-05 14:55:09,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:09,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044284067] [2021-06-05 14:55:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:09,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:09,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044284067] [2021-06-05 14:55:09,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044284067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:09,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:09,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:09,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854208787] [2021-06-05 14:55:09,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:09,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:09,642 INFO L87 Difference]: Start difference. First operand 6252 states and 21836 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:11,006 INFO L93 Difference]: Finished difference Result 7687 states and 26622 transitions. [2021-06-05 14:55:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 14:55:11,007 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:11,021 INFO L225 Difference]: With dead ends: 7687 [2021-06-05 14:55:11,021 INFO L226 Difference]: Without dead ends: 7592 [2021-06-05 14:55:11,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 770.7ms TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:55:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-06-05 14:55:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6232. [2021-06-05 14:55:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 3.4973519499277805) internal successors, (21792), 6231 states have internal predecessors, (21792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21792 transitions. [2021-06-05 14:55:11,124 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21792 transitions. Word has length 47 [2021-06-05 14:55:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:11,124 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21792 transitions. [2021-06-05 14:55:11,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21792 transitions. [2021-06-05 14:55:11,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:11,133 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:11,133 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:11,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 14:55:11,133 INFO L430 AbstractCegarLoop]: === Iteration 122 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:11,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:11,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1891351986, now seen corresponding path program 122 times [2021-06-05 14:55:11,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:11,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033378306] [2021-06-05 14:55:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:11,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:11,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033378306] [2021-06-05 14:55:11,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033378306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:11,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:11,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:11,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256723027] [2021-06-05 14:55:11,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:11,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:11,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:11,374 INFO L87 Difference]: Start difference. First operand 6232 states and 21792 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:12,381 INFO L93 Difference]: Finished difference Result 7069 states and 24460 transitions. [2021-06-05 14:55:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:55:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:12,393 INFO L225 Difference]: With dead ends: 7069 [2021-06-05 14:55:12,393 INFO L226 Difference]: Without dead ends: 6972 [2021-06-05 14:55:12,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 659.9ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:55:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2021-06-05 14:55:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6246. [2021-06-05 14:55:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 6245 states have (on average 3.4938350680544437) internal successors, (21819), 6245 states have internal predecessors, (21819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 21819 transitions. [2021-06-05 14:55:12,493 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 21819 transitions. Word has length 47 [2021-06-05 14:55:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:12,493 INFO L482 AbstractCegarLoop]: Abstraction has 6246 states and 21819 transitions. [2021-06-05 14:55:12,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 21819 transitions. [2021-06-05 14:55:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:12,502 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:12,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:12,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 14:55:12,502 INFO L430 AbstractCegarLoop]: === Iteration 123 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:12,502 INFO L82 PathProgramCache]: Analyzing trace with hash 165931476, now seen corresponding path program 123 times [2021-06-05 14:55:12,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:12,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199139771] [2021-06-05 14:55:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:12,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:12,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199139771] [2021-06-05 14:55:12,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199139771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:12,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:12,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:12,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628184038] [2021-06-05 14:55:12,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:12,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:12,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:12,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:12,745 INFO L87 Difference]: Start difference. First operand 6246 states and 21819 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:13,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:13,759 INFO L93 Difference]: Finished difference Result 7045 states and 24370 transitions. [2021-06-05 14:55:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:55:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:13,772 INFO L225 Difference]: With dead ends: 7045 [2021-06-05 14:55:13,772 INFO L226 Difference]: Without dead ends: 6940 [2021-06-05 14:55:13,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 644.2ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:55:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2021-06-05 14:55:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6232. [2021-06-05 14:55:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6231 states have (on average 3.4963890226287915) internal successors, (21786), 6231 states have internal predecessors, (21786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21786 transitions. [2021-06-05 14:55:13,874 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21786 transitions. Word has length 47 [2021-06-05 14:55:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:13,874 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21786 transitions. [2021-06-05 14:55:13,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21786 transitions. [2021-06-05 14:55:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:13,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:13,883 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:13,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 14:55:13,883 INFO L430 AbstractCegarLoop]: === Iteration 124 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1809468076, now seen corresponding path program 124 times [2021-06-05 14:55:13,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:13,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556265114] [2021-06-05 14:55:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:14,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:14,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556265114] [2021-06-05 14:55:14,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556265114] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:14,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:14,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:14,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969379642] [2021-06-05 14:55:14,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:14,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:14,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:14,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:14,098 INFO L87 Difference]: Start difference. First operand 6232 states and 21786 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:15,175 INFO L93 Difference]: Finished difference Result 6956 states and 24174 transitions. [2021-06-05 14:55:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:55:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:15,189 INFO L225 Difference]: With dead ends: 6956 [2021-06-05 14:55:15,189 INFO L226 Difference]: Without dead ends: 6867 [2021-06-05 14:55:15,189 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 760.0ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 14:55:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2021-06-05 14:55:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6236. [2021-06-05 14:55:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 3.4963913392141137) internal successors, (21800), 6235 states have internal predecessors, (21800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21800 transitions. [2021-06-05 14:55:15,290 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21800 transitions. Word has length 47 [2021-06-05 14:55:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:15,290 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21800 transitions. [2021-06-05 14:55:15,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21800 transitions. [2021-06-05 14:55:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:15,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:15,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:15,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 14:55:15,300 INFO L430 AbstractCegarLoop]: === Iteration 125 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:15,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2133129900, now seen corresponding path program 125 times [2021-06-05 14:55:15,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:15,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581330054] [2021-06-05 14:55:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:15,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:15,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581330054] [2021-06-05 14:55:15,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581330054] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:15,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:15,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:15,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838276046] [2021-06-05 14:55:15,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:15,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:15,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:15,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:15,538 INFO L87 Difference]: Start difference. First operand 6236 states and 21800 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:16,576 INFO L93 Difference]: Finished difference Result 6964 states and 24202 transitions. [2021-06-05 14:55:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:55:16,576 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:16,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:16,589 INFO L225 Difference]: With dead ends: 6964 [2021-06-05 14:55:16,589 INFO L226 Difference]: Without dead ends: 6859 [2021-06-05 14:55:16,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 727.9ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:55:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2021-06-05 14:55:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6252. [2021-06-05 14:55:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 3.495120780675092) internal successors, (21848), 6251 states have internal predecessors, (21848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21848 transitions. [2021-06-05 14:55:16,693 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21848 transitions. Word has length 47 [2021-06-05 14:55:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:16,693 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21848 transitions. [2021-06-05 14:55:16,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21848 transitions. [2021-06-05 14:55:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:16,702 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:16,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:16,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 14:55:16,702 INFO L430 AbstractCegarLoop]: === Iteration 126 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2077018446, now seen corresponding path program 126 times [2021-06-05 14:55:16,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:16,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115424993] [2021-06-05 14:55:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:16,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:16,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115424993] [2021-06-05 14:55:16,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115424993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:16,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:16,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:16,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366535318] [2021-06-05 14:55:16,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:16,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:16,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:16,913 INFO L87 Difference]: Start difference. First operand 6252 states and 21848 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:18,003 INFO L93 Difference]: Finished difference Result 6933 states and 24139 transitions. [2021-06-05 14:55:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 14:55:18,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:18,016 INFO L225 Difference]: With dead ends: 6933 [2021-06-05 14:55:18,016 INFO L226 Difference]: Without dead ends: 6772 [2021-06-05 14:55:18,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 747.3ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 14:55:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2021-06-05 14:55:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6236. [2021-06-05 14:55:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 3.4957497995188453) internal successors, (21796), 6235 states have internal predecessors, (21796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21796 transitions. [2021-06-05 14:55:18,115 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21796 transitions. Word has length 47 [2021-06-05 14:55:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:18,116 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21796 transitions. [2021-06-05 14:55:18,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21796 transitions. [2021-06-05 14:55:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:18,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:18,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:18,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 14:55:18,124 INFO L430 AbstractCegarLoop]: === Iteration 127 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:18,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1926959818, now seen corresponding path program 127 times [2021-06-05 14:55:18,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:18,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738338557] [2021-06-05 14:55:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:18,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:18,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738338557] [2021-06-05 14:55:18,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738338557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:18,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:18,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:18,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773036902] [2021-06-05 14:55:18,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:18,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:18,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:18,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:18,380 INFO L87 Difference]: Start difference. First operand 6236 states and 21796 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:19,442 INFO L93 Difference]: Finished difference Result 7096 states and 24537 transitions. [2021-06-05 14:55:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:55:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:19,455 INFO L225 Difference]: With dead ends: 7096 [2021-06-05 14:55:19,456 INFO L226 Difference]: Without dead ends: 7007 [2021-06-05 14:55:19,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 732.4ms TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:55:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-06-05 14:55:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6238. [2021-06-05 14:55:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 3.4957511624178292) internal successors, (21803), 6237 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21803 transitions. [2021-06-05 14:55:19,560 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21803 transitions. Word has length 47 [2021-06-05 14:55:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:19,560 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21803 transitions. [2021-06-05 14:55:19,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21803 transitions. [2021-06-05 14:55:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:19,569 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:19,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:19,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 14:55:19,569 INFO L430 AbstractCegarLoop]: === Iteration 128 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:19,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2044345654, now seen corresponding path program 128 times [2021-06-05 14:55:19,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:19,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37613465] [2021-06-05 14:55:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:19,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:19,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37613465] [2021-06-05 14:55:19,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37613465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:19,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:19,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:19,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932518319] [2021-06-05 14:55:19,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:19,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:19,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:19,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:19,783 INFO L87 Difference]: Start difference. First operand 6238 states and 21803 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:20,784 INFO L93 Difference]: Finished difference Result 7104 states and 24565 transitions. [2021-06-05 14:55:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 14:55:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:20,798 INFO L225 Difference]: With dead ends: 7104 [2021-06-05 14:55:20,798 INFO L226 Difference]: Without dead ends: 6999 [2021-06-05 14:55:20,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 682.3ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 14:55:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-06-05 14:55:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6238. [2021-06-05 14:55:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6237 states have (on average 3.4954304954304956) internal successors, (21801), 6237 states have internal predecessors, (21801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21801 transitions. [2021-06-05 14:55:20,901 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21801 transitions. Word has length 47 [2021-06-05 14:55:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:20,901 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21801 transitions. [2021-06-05 14:55:20,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21801 transitions. [2021-06-05 14:55:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:20,911 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:20,911 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:20,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 14:55:20,911 INFO L430 AbstractCegarLoop]: === Iteration 129 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:20,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:20,911 INFO L82 PathProgramCache]: Analyzing trace with hash 419579220, now seen corresponding path program 129 times [2021-06-05 14:55:20,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:20,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258011921] [2021-06-05 14:55:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:21,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:21,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258011921] [2021-06-05 14:55:21,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258011921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:21,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:21,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:21,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54161748] [2021-06-05 14:55:21,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:21,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:21,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:21,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:21,128 INFO L87 Difference]: Start difference. First operand 6238 states and 21801 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:22,645 INFO L93 Difference]: Finished difference Result 8205 states and 28472 transitions. [2021-06-05 14:55:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 14:55:22,646 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:22,660 INFO L225 Difference]: With dead ends: 8205 [2021-06-05 14:55:22,660 INFO L226 Difference]: Without dead ends: 8100 [2021-06-05 14:55:22,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 857.7ms TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 14:55:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-06-05 14:55:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6184. [2021-06-05 14:55:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 6183 states have (on average 3.4957140546660197) internal successors, (21614), 6183 states have internal predecessors, (21614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21614 transitions. [2021-06-05 14:55:22,809 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21614 transitions. Word has length 47 [2021-06-05 14:55:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:22,809 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21614 transitions. [2021-06-05 14:55:22,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21614 transitions. [2021-06-05 14:55:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:22,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:22,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:22,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 14:55:22,818 INFO L430 AbstractCegarLoop]: === Iteration 130 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -355538382, now seen corresponding path program 130 times [2021-06-05 14:55:22,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:22,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253773783] [2021-06-05 14:55:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:23,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:23,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253773783] [2021-06-05 14:55:23,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253773783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:23,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:23,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:23,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809810884] [2021-06-05 14:55:23,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:23,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:23,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:23,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:23,036 INFO L87 Difference]: Start difference. First operand 6184 states and 21614 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:24,517 INFO L93 Difference]: Finished difference Result 8191 states and 28417 transitions. [2021-06-05 14:55:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 14:55:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:24,532 INFO L225 Difference]: With dead ends: 8191 [2021-06-05 14:55:24,532 INFO L226 Difference]: Without dead ends: 8096 [2021-06-05 14:55:24,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 825.4ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 14:55:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-06-05 14:55:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 6148. [2021-06-05 14:55:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.498291849682772) internal successors, (21504), 6147 states have internal predecessors, (21504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21504 transitions. [2021-06-05 14:55:24,639 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21504 transitions. Word has length 47 [2021-06-05 14:55:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:24,639 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21504 transitions. [2021-06-05 14:55:24,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21504 transitions. [2021-06-05 14:55:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:24,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:24,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:24,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 14:55:24,648 INFO L430 AbstractCegarLoop]: === Iteration 131 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash -56646704, now seen corresponding path program 131 times [2021-06-05 14:55:24,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:24,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896874770] [2021-06-05 14:55:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:24,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:24,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896874770] [2021-06-05 14:55:24,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896874770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:24,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:24,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:24,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127387456] [2021-06-05 14:55:24,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:24,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:24,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:24,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:24,862 INFO L87 Difference]: Start difference. First operand 6148 states and 21504 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:25,843 INFO L93 Difference]: Finished difference Result 7016 states and 24273 transitions. [2021-06-05 14:55:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 14:55:25,843 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:25,855 INFO L225 Difference]: With dead ends: 7016 [2021-06-05 14:55:25,855 INFO L226 Difference]: Without dead ends: 6919 [2021-06-05 14:55:25,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 652.1ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:55:25,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-06-05 14:55:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6160. [2021-06-05 14:55:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6160 states, 6159 states have (on average 3.496022081506738) internal successors, (21532), 6159 states have internal predecessors, (21532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21532 transitions. [2021-06-05 14:55:25,950 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21532 transitions. Word has length 47 [2021-06-05 14:55:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:25,950 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21532 transitions. [2021-06-05 14:55:25,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21532 transitions. [2021-06-05 14:55:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:25,959 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:25,959 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:25,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 14:55:25,959 INFO L430 AbstractCegarLoop]: === Iteration 132 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:25,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:25,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1782067214, now seen corresponding path program 132 times [2021-06-05 14:55:25,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:25,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400687352] [2021-06-05 14:55:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:26,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:26,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400687352] [2021-06-05 14:55:26,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400687352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:26,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:26,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:26,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802973413] [2021-06-05 14:55:26,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:26,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:26,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:26,166 INFO L87 Difference]: Start difference. First operand 6160 states and 21532 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:27,172 INFO L93 Difference]: Finished difference Result 6992 states and 24183 transitions. [2021-06-05 14:55:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 14:55:27,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:27,185 INFO L225 Difference]: With dead ends: 6992 [2021-06-05 14:55:27,185 INFO L226 Difference]: Without dead ends: 6893 [2021-06-05 14:55:27,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 654.0ms TimeCoverageRelationStatistics Valid=174, Invalid=1718, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 14:55:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-06-05 14:55:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6152. [2021-06-05 14:55:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 6151 states have (on average 3.4973175093480733) internal successors, (21512), 6151 states have internal predecessors, (21512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 21512 transitions. [2021-06-05 14:55:27,289 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 21512 transitions. Word has length 47 [2021-06-05 14:55:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:27,289 INFO L482 AbstractCegarLoop]: Abstraction has 6152 states and 21512 transitions. [2021-06-05 14:55:27,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 21512 transitions. [2021-06-05 14:55:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:27,298 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:27,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:27,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 14:55:27,298 INFO L430 AbstractCegarLoop]: === Iteration 133 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:27,298 INFO L82 PathProgramCache]: Analyzing trace with hash -706322650, now seen corresponding path program 133 times [2021-06-05 14:55:27,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:27,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987253840] [2021-06-05 14:55:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:27,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:27,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987253840] [2021-06-05 14:55:27,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987253840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:27,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:27,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:27,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579099035] [2021-06-05 14:55:27,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:27,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:27,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:27,504 INFO L87 Difference]: Start difference. First operand 6152 states and 21512 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:28,464 INFO L93 Difference]: Finished difference Result 6747 states and 23504 transitions. [2021-06-05 14:55:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 14:55:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:28,476 INFO L225 Difference]: With dead ends: 6747 [2021-06-05 14:55:28,476 INFO L226 Difference]: Without dead ends: 6602 [2021-06-05 14:55:28,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 649.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 14:55:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2021-06-05 14:55:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6164. [2021-06-05 14:55:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6164 states, 6163 states have (on average 3.495375628752231) internal successors, (21542), 6163 states have internal predecessors, (21542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6164 states to 6164 states and 21542 transitions. [2021-06-05 14:55:28,572 INFO L78 Accepts]: Start accepts. Automaton has 6164 states and 21542 transitions. Word has length 47 [2021-06-05 14:55:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:28,573 INFO L482 AbstractCegarLoop]: Abstraction has 6164 states and 21542 transitions. [2021-06-05 14:55:28,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:28,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6164 states and 21542 transitions. [2021-06-05 14:55:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:28,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:28,581 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:28,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 14:55:28,581 INFO L430 AbstractCegarLoop]: === Iteration 134 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1645191940, now seen corresponding path program 134 times [2021-06-05 14:55:28,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:28,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578174445] [2021-06-05 14:55:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:28,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:28,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578174445] [2021-06-05 14:55:28,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578174445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:28,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:28,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:28,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441313392] [2021-06-05 14:55:28,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:28,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:28,787 INFO L87 Difference]: Start difference. First operand 6164 states and 21542 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:29,730 INFO L93 Difference]: Finished difference Result 6867 states and 23807 transitions. [2021-06-05 14:55:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 14:55:29,730 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:29,742 INFO L225 Difference]: With dead ends: 6867 [2021-06-05 14:55:29,742 INFO L226 Difference]: Without dead ends: 6770 [2021-06-05 14:55:29,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 615.3ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 14:55:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-06-05 14:55:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6170. [2021-06-05 14:55:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 6169 states have (on average 3.4944075214783594) internal successors, (21557), 6169 states have internal predecessors, (21557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21557 transitions. [2021-06-05 14:55:29,840 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21557 transitions. Word has length 47 [2021-06-05 14:55:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:29,841 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21557 transitions. [2021-06-05 14:55:29,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21557 transitions. [2021-06-05 14:55:29,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:29,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:29,849 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:29,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 14:55:29,849 INFO L430 AbstractCegarLoop]: === Iteration 135 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash -80228570, now seen corresponding path program 135 times [2021-06-05 14:55:29,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:29,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102559499] [2021-06-05 14:55:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:30,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:30,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102559499] [2021-06-05 14:55:30,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102559499] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:30,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:30,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:55:30,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600078905] [2021-06-05 14:55:30,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:55:30,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:30,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:55:30,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:55:30,082 INFO L87 Difference]: Start difference. First operand 6170 states and 21557 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:31,019 INFO L93 Difference]: Finished difference Result 6768 states and 23502 transitions. [2021-06-05 14:55:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:55:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:31,031 INFO L225 Difference]: With dead ends: 6768 [2021-06-05 14:55:31,031 INFO L226 Difference]: Without dead ends: 6639 [2021-06-05 14:55:31,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 612.6ms TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 14:55:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-06-05 14:55:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6132. [2021-06-05 14:55:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6132 states, 6131 states have (on average 3.501549502528136) internal successors, (21468), 6131 states have internal predecessors, (21468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21468 transitions. [2021-06-05 14:55:31,123 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21468 transitions. Word has length 47 [2021-06-05 14:55:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:31,123 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21468 transitions. [2021-06-05 14:55:31,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21468 transitions. [2021-06-05 14:55:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:31,131 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:31,131 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:31,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 14:55:31,131 INFO L430 AbstractCegarLoop]: === Iteration 136 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1751248534, now seen corresponding path program 136 times [2021-06-05 14:55:31,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:31,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754230129] [2021-06-05 14:55:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:31,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:31,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754230129] [2021-06-05 14:55:31,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754230129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:31,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:31,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:55:31,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660570938] [2021-06-05 14:55:31,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:55:31,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:31,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:55:31,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:55:31,317 INFO L87 Difference]: Start difference. First operand 6132 states and 21468 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:32,123 INFO L93 Difference]: Finished difference Result 6669 states and 23217 transitions. [2021-06-05 14:55:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 14:55:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:32,134 INFO L225 Difference]: With dead ends: 6669 [2021-06-05 14:55:32,134 INFO L226 Difference]: Without dead ends: 6532 [2021-06-05 14:55:32,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 520.9ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 14:55:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-06-05 14:55:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6148. [2021-06-05 14:55:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 3.5002440214738897) internal successors, (21516), 6147 states have internal predecessors, (21516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21516 transitions. [2021-06-05 14:55:32,225 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21516 transitions. Word has length 47 [2021-06-05 14:55:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:32,225 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21516 transitions. [2021-06-05 14:55:32,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21516 transitions. [2021-06-05 14:55:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:32,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:32,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:32,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 14:55:32,233 INFO L430 AbstractCegarLoop]: === Iteration 137 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:32,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1026022540, now seen corresponding path program 137 times [2021-06-05 14:55:32,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:32,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666079699] [2021-06-05 14:55:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:32,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:32,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666079699] [2021-06-05 14:55:32,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666079699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:32,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:32,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:32,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937275460] [2021-06-05 14:55:32,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:32,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:32,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:32,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:32,443 INFO L87 Difference]: Start difference. First operand 6148 states and 21516 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:33,308 INFO L93 Difference]: Finished difference Result 6728 states and 23376 transitions. [2021-06-05 14:55:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 14:55:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:33,320 INFO L225 Difference]: With dead ends: 6728 [2021-06-05 14:55:33,320 INFO L226 Difference]: Without dead ends: 6639 [2021-06-05 14:55:33,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 594.6ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:55:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-06-05 14:55:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6212. [2021-06-05 14:55:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49895346965062) internal successors, (21732), 6211 states have internal predecessors, (21732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21732 transitions. [2021-06-05 14:55:33,416 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21732 transitions. Word has length 47 [2021-06-05 14:55:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:33,416 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21732 transitions. [2021-06-05 14:55:33,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21732 transitions. [2021-06-05 14:55:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:33,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:33,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:33,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 14:55:33,425 INFO L430 AbstractCegarLoop]: === Iteration 138 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:33,425 INFO L82 PathProgramCache]: Analyzing trace with hash -591993194, now seen corresponding path program 138 times [2021-06-05 14:55:33,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:33,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601664463] [2021-06-05 14:55:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:33,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:33,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601664463] [2021-06-05 14:55:33,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601664463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:33,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:33,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:33,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744988890] [2021-06-05 14:55:33,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:33,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:33,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:33,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:33,631 INFO L87 Difference]: Start difference. First operand 6212 states and 21732 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:34,516 INFO L93 Difference]: Finished difference Result 6637 states and 23105 transitions. [2021-06-05 14:55:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 14:55:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:34,529 INFO L225 Difference]: With dead ends: 6637 [2021-06-05 14:55:34,529 INFO L226 Difference]: Without dead ends: 6508 [2021-06-05 14:55:34,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 590.9ms TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 14:55:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-06-05 14:55:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6212. [2021-06-05 14:55:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49508935759137) internal successors, (21708), 6211 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-06-05 14:55:34,622 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-06-05 14:55:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:34,622 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-06-05 14:55:34,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-06-05 14:55:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:34,630 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:34,631 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:34,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 14:55:34,631 INFO L430 AbstractCegarLoop]: === Iteration 139 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash 969440292, now seen corresponding path program 139 times [2021-06-05 14:55:34,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:34,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572023898] [2021-06-05 14:55:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:34,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:34,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572023898] [2021-06-05 14:55:34,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572023898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:34,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:34,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:34,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771990046] [2021-06-05 14:55:34,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:34,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:34,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:34,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:34,818 INFO L87 Difference]: Start difference. First operand 6212 states and 21708 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:35,677 INFO L93 Difference]: Finished difference Result 6680 states and 23216 transitions. [2021-06-05 14:55:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 14:55:35,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:35,689 INFO L225 Difference]: With dead ends: 6680 [2021-06-05 14:55:35,689 INFO L226 Difference]: Without dead ends: 6591 [2021-06-05 14:55:35,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 584.7ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 14:55:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-06-05 14:55:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6212. [2021-06-05 14:55:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6212 states, 6211 states have (on average 3.49508935759137) internal successors, (21708), 6211 states have internal predecessors, (21708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-06-05 14:55:35,783 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-06-05 14:55:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:35,784 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-06-05 14:55:35,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-06-05 14:55:35,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:35,792 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:35,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:35,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 14:55:35,792 INFO L430 AbstractCegarLoop]: === Iteration 140 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:35,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1403469638, now seen corresponding path program 140 times [2021-06-05 14:55:35,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:35,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631173782] [2021-06-05 14:55:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:35,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:35,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631173782] [2021-06-05 14:55:35,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631173782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:35,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:35,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:35,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588803271] [2021-06-05 14:55:35,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:35,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:35,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:35,985 INFO L87 Difference]: Start difference. First operand 6212 states and 21708 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:36,832 INFO L93 Difference]: Finished difference Result 6688 states and 23244 transitions. [2021-06-05 14:55:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 14:55:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:36,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:36,846 INFO L225 Difference]: With dead ends: 6688 [2021-06-05 14:55:36,846 INFO L226 Difference]: Without dead ends: 6583 [2021-06-05 14:55:36,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 570.5ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 14:55:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-06-05 14:55:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6228. [2021-06-05 14:55:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 6227 states have (on average 3.4938172474706923) internal successors, (21756), 6227 states have internal predecessors, (21756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 21756 transitions. [2021-06-05 14:55:36,948 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 21756 transitions. Word has length 47 [2021-06-05 14:55:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:36,948 INFO L482 AbstractCegarLoop]: Abstraction has 6228 states and 21756 transitions. [2021-06-05 14:55:36,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 21756 transitions. [2021-06-05 14:55:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:36,957 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:36,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:36,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 14:55:36,957 INFO L430 AbstractCegarLoop]: === Iteration 141 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:36,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1618563950, now seen corresponding path program 141 times [2021-06-05 14:55:36,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:36,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749725216] [2021-06-05 14:55:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:37,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:37,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749725216] [2021-06-05 14:55:37,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749725216] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:37,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:37,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:37,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62700177] [2021-06-05 14:55:37,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:37,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:37,159 INFO L87 Difference]: Start difference. First operand 6228 states and 21756 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:37,977 INFO L93 Difference]: Finished difference Result 6581 states and 22917 transitions. [2021-06-05 14:55:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 14:55:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:37,989 INFO L225 Difference]: With dead ends: 6581 [2021-06-05 14:55:37,989 INFO L226 Difference]: Without dead ends: 6312 [2021-06-05 14:55:37,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 543.5ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 14:55:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6312 states. [2021-06-05 14:55:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6312 to 6104. [2021-06-05 14:55:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.5045059806652468) internal successors, (21388), 6103 states have internal predecessors, (21388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21388 transitions. [2021-06-05 14:55:38,136 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21388 transitions. Word has length 47 [2021-06-05 14:55:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:38,136 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21388 transitions. [2021-06-05 14:55:38,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21388 transitions. [2021-06-05 14:55:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:38,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:38,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:38,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 14:55:38,145 INFO L430 AbstractCegarLoop]: === Iteration 142 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1913602850, now seen corresponding path program 142 times [2021-06-05 14:55:38,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:38,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396547830] [2021-06-05 14:55:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:38,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:38,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396547830] [2021-06-05 14:55:38,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396547830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:38,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:38,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:38,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523530644] [2021-06-05 14:55:38,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:38,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:38,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:38,338 INFO L87 Difference]: Start difference. First operand 6104 states and 21388 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:41,121 INFO L93 Difference]: Finished difference Result 10135 states and 35578 transitions. [2021-06-05 14:55:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 14:55:41,122 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:41,139 INFO L225 Difference]: With dead ends: 10135 [2021-06-05 14:55:41,139 INFO L226 Difference]: Without dead ends: 9908 [2021-06-05 14:55:41,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 1556.9ms TimeCoverageRelationStatistics Valid=518, Invalid=5334, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 14:55:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2021-06-05 14:55:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6307. [2021-06-05 14:55:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6307 states, 6306 states have (on average 3.5041230574056454) internal successors, (22097), 6306 states have internal predecessors, (22097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 22097 transitions. [2021-06-05 14:55:41,257 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 22097 transitions. Word has length 47 [2021-06-05 14:55:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:41,257 INFO L482 AbstractCegarLoop]: Abstraction has 6307 states and 22097 transitions. [2021-06-05 14:55:41,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 22097 transitions. [2021-06-05 14:55:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:41,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:41,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:41,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 14:55:41,266 INFO L430 AbstractCegarLoop]: === Iteration 143 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1598110108, now seen corresponding path program 143 times [2021-06-05 14:55:41,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:41,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950430686] [2021-06-05 14:55:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:41,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:41,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950430686] [2021-06-05 14:55:41,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950430686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:41,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:41,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:41,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007478549] [2021-06-05 14:55:41,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:41,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:41,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:41,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:41,457 INFO L87 Difference]: Start difference. First operand 6307 states and 22097 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:46,496 INFO L93 Difference]: Finished difference Result 12884 states and 45400 transitions. [2021-06-05 14:55:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-06-05 14:55:46,496 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:46,521 INFO L225 Difference]: With dead ends: 12884 [2021-06-05 14:55:46,521 INFO L226 Difference]: Without dead ends: 12525 [2021-06-05 14:55:46,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5304 ImplicationChecksByTransitivity, 3137.0ms TimeCoverageRelationStatistics Valid=1263, Invalid=13743, Unknown=0, NotChecked=0, Total=15006 [2021-06-05 14:55:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2021-06-05 14:55:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 7156. [2021-06-05 14:55:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7156 states, 7155 states have (on average 3.527183787561146) internal successors, (25237), 7155 states have internal predecessors, (25237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 25237 transitions. [2021-06-05 14:55:46,667 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 25237 transitions. Word has length 47 [2021-06-05 14:55:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:46,667 INFO L482 AbstractCegarLoop]: Abstraction has 7156 states and 25237 transitions. [2021-06-05 14:55:46,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 25237 transitions. [2021-06-05 14:55:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:46,676 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:46,676 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:46,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 14:55:46,677 INFO L430 AbstractCegarLoop]: === Iteration 144 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash 747458200, now seen corresponding path program 144 times [2021-06-05 14:55:46,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:46,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825677092] [2021-06-05 14:55:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:46,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:46,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825677092] [2021-06-05 14:55:46,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825677092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:46,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:46,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:46,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120764923] [2021-06-05 14:55:46,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:46,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:46,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:46,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:46,932 INFO L87 Difference]: Start difference. First operand 7156 states and 25237 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:51,044 INFO L93 Difference]: Finished difference Result 12739 states and 45281 transitions. [2021-06-05 14:55:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-06-05 14:55:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:51,068 INFO L225 Difference]: With dead ends: 12739 [2021-06-05 14:55:51,068 INFO L226 Difference]: Without dead ends: 12536 [2021-06-05 14:55:51,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4008 ImplicationChecksByTransitivity, 2531.7ms TimeCoverageRelationStatistics Valid=943, Invalid=10829, Unknown=0, NotChecked=0, Total=11772 [2021-06-05 14:55:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2021-06-05 14:55:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 7188. [2021-06-05 14:55:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 7187 states have (on average 3.5301238347015444) internal successors, (25371), 7187 states have internal predecessors, (25371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 25371 transitions. [2021-06-05 14:55:51,254 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 25371 transitions. Word has length 47 [2021-06-05 14:55:51,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:51,254 INFO L482 AbstractCegarLoop]: Abstraction has 7188 states and 25371 transitions. [2021-06-05 14:55:51,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 25371 transitions. [2021-06-05 14:55:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:51,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:51,264 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:51,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 14:55:51,264 INFO L430 AbstractCegarLoop]: === Iteration 145 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:51,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1371701544, now seen corresponding path program 145 times [2021-06-05 14:55:51,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:51,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077617586] [2021-06-05 14:55:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:51,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:51,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077617586] [2021-06-05 14:55:51,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077617586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:51,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:51,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:55:51,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24736770] [2021-06-05 14:55:51,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:55:51,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:51,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:55:51,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:55:51,438 INFO L87 Difference]: Start difference. First operand 7188 states and 25371 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:55:55,384 INFO L93 Difference]: Finished difference Result 11886 states and 41418 transitions. [2021-06-05 14:55:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 14:55:55,384 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:55:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:55:55,405 INFO L225 Difference]: With dead ends: 11886 [2021-06-05 14:55:55,406 INFO L226 Difference]: Without dead ends: 11431 [2021-06-05 14:55:55,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 2364.1ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 14:55:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2021-06-05 14:55:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 7463. [2021-06-05 14:55:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7463 states, 7462 states have (on average 3.528142589118199) internal successors, (26327), 7462 states have internal predecessors, (26327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 26327 transitions. [2021-06-05 14:55:55,596 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 26327 transitions. Word has length 47 [2021-06-05 14:55:55,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:55:55,596 INFO L482 AbstractCegarLoop]: Abstraction has 7463 states and 26327 transitions. [2021-06-05 14:55:55,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:55:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 26327 transitions. [2021-06-05 14:55:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:55:55,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:55:55,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:55:55,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 14:55:55,607 INFO L430 AbstractCegarLoop]: === Iteration 146 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:55:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:55:55,607 INFO L82 PathProgramCache]: Analyzing trace with hash 944391290, now seen corresponding path program 146 times [2021-06-05 14:55:55,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:55:55,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555565672] [2021-06-05 14:55:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:55:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:55:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:55:55,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:55:55,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555565672] [2021-06-05 14:55:55,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555565672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:55:55,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:55:55,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:55:55,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111422560] [2021-06-05 14:55:55,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:55:55,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:55:55,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:55:55,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:55:55,797 INFO L87 Difference]: Start difference. First operand 7463 states and 26327 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:00,959 INFO L93 Difference]: Finished difference Result 13404 states and 47111 transitions. [2021-06-05 14:56:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-06-05 14:56:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:00,985 INFO L225 Difference]: With dead ends: 13404 [2021-06-05 14:56:00,985 INFO L226 Difference]: Without dead ends: 13078 [2021-06-05 14:56:00,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 3096.3ms TimeCoverageRelationStatistics Valid=1198, Invalid=13564, Unknown=0, NotChecked=0, Total=14762 [2021-06-05 14:56:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13078 states. [2021-06-05 14:56:01,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13078 to 7625. [2021-06-05 14:56:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7625 states, 7624 states have (on average 3.536332633788038) internal successors, (26961), 7624 states have internal predecessors, (26961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 26961 transitions. [2021-06-05 14:56:01,141 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 26961 transitions. Word has length 47 [2021-06-05 14:56:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:01,141 INFO L482 AbstractCegarLoop]: Abstraction has 7625 states and 26961 transitions. [2021-06-05 14:56:01,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 26961 transitions. [2021-06-05 14:56:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:01,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:01,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:01,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 14:56:01,152 INFO L430 AbstractCegarLoop]: === Iteration 147 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash 93739382, now seen corresponding path program 147 times [2021-06-05 14:56:01,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:01,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051786065] [2021-06-05 14:56:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:01,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:01,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051786065] [2021-06-05 14:56:01,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051786065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:01,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:01,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:56:01,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221340899] [2021-06-05 14:56:01,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:56:01,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:01,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:56:01,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:56:01,366 INFO L87 Difference]: Start difference. First operand 7625 states and 26961 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:06,250 INFO L93 Difference]: Finished difference Result 13323 states and 47094 transitions. [2021-06-05 14:56:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-06-05 14:56:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:06,277 INFO L225 Difference]: With dead ends: 13323 [2021-06-05 14:56:06,277 INFO L226 Difference]: Without dead ends: 13076 [2021-06-05 14:56:06,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4525 ImplicationChecksByTransitivity, 2832.4ms TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2021-06-05 14:56:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13076 states. [2021-06-05 14:56:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13076 to 7557. [2021-06-05 14:56:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 7556 states have (on average 3.5428798305982) internal successors, (26770), 7556 states have internal predecessors, (26770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 26770 transitions. [2021-06-05 14:56:06,433 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 26770 transitions. Word has length 47 [2021-06-05 14:56:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:06,433 INFO L482 AbstractCegarLoop]: Abstraction has 7557 states and 26770 transitions. [2021-06-05 14:56:06,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 26770 transitions. [2021-06-05 14:56:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:06,444 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:06,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:06,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 14:56:06,444 INFO L430 AbstractCegarLoop]: === Iteration 148 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1813193950, now seen corresponding path program 148 times [2021-06-05 14:56:06,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:06,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953058778] [2021-06-05 14:56:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:06,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:06,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953058778] [2021-06-05 14:56:06,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953058778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:06,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:06,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:06,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372198078] [2021-06-05 14:56:06,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:06,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:06,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:06,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:06,649 INFO L87 Difference]: Start difference. First operand 7557 states and 26770 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:09,854 INFO L93 Difference]: Finished difference Result 12055 states and 42495 transitions. [2021-06-05 14:56:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 14:56:09,854 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:09,875 INFO L225 Difference]: With dead ends: 12055 [2021-06-05 14:56:09,875 INFO L226 Difference]: Without dead ends: 11928 [2021-06-05 14:56:09,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1759.3ms TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 14:56:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2021-06-05 14:56:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 7585. [2021-06-05 14:56:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.539820675105485) internal successors, (26846), 7584 states have internal predecessors, (26846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26846 transitions. [2021-06-05 14:56:10,018 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26846 transitions. Word has length 47 [2021-06-05 14:56:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:10,019 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26846 transitions. [2021-06-05 14:56:10,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26846 transitions. [2021-06-05 14:56:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:10,029 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:10,029 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:10,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 14:56:10,029 INFO L430 AbstractCegarLoop]: === Iteration 149 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1029939612, now seen corresponding path program 149 times [2021-06-05 14:56:10,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:10,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761654659] [2021-06-05 14:56:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:10,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:10,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761654659] [2021-06-05 14:56:10,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761654659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:10,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:10,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:10,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927536187] [2021-06-05 14:56:10,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:10,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:10,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:10,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:10,236 INFO L87 Difference]: Start difference. First operand 7585 states and 26846 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:15,403 INFO L93 Difference]: Finished difference Result 14119 states and 49890 transitions. [2021-06-05 14:56:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-05 14:56:15,403 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:15,430 INFO L225 Difference]: With dead ends: 14119 [2021-06-05 14:56:15,430 INFO L226 Difference]: Without dead ends: 14030 [2021-06-05 14:56:15,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5739 ImplicationChecksByTransitivity, 3228.6ms TimeCoverageRelationStatistics Valid=1316, Invalid=14940, Unknown=0, NotChecked=0, Total=16256 [2021-06-05 14:56:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2021-06-05 14:56:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 7583. [2021-06-05 14:56:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7583 states, 7582 states have (on average 3.541545766288578) internal successors, (26852), 7582 states have internal predecessors, (26852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 26852 transitions. [2021-06-05 14:56:15,590 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 26852 transitions. Word has length 47 [2021-06-05 14:56:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:15,590 INFO L482 AbstractCegarLoop]: Abstraction has 7583 states and 26852 transitions. [2021-06-05 14:56:15,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 26852 transitions. [2021-06-05 14:56:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:15,601 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:15,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:15,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 14:56:15,601 INFO L430 AbstractCegarLoop]: === Iteration 150 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:15,601 INFO L82 PathProgramCache]: Analyzing trace with hash 179287704, now seen corresponding path program 150 times [2021-06-05 14:56:15,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:15,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690656241] [2021-06-05 14:56:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:15,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:15,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690656241] [2021-06-05 14:56:15,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690656241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:15,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:15,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:15,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854604899] [2021-06-05 14:56:15,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:15,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:15,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:15,818 INFO L87 Difference]: Start difference. First operand 7583 states and 26852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:20,281 INFO L93 Difference]: Finished difference Result 13896 states and 49472 transitions. [2021-06-05 14:56:20,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-06-05 14:56:20,282 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:20,309 INFO L225 Difference]: With dead ends: 13896 [2021-06-05 14:56:20,309 INFO L226 Difference]: Without dead ends: 13793 [2021-06-05 14:56:20,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4760 ImplicationChecksByTransitivity, 2696.2ms TimeCoverageRelationStatistics Valid=1039, Invalid=12767, Unknown=0, NotChecked=0, Total=13806 [2021-06-05 14:56:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2021-06-05 14:56:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 7563. [2021-06-05 14:56:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7563 states, 7562 states have (on average 3.54350700872785) internal successors, (26796), 7562 states have internal predecessors, (26796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7563 states to 7563 states and 26796 transitions. [2021-06-05 14:56:20,467 INFO L78 Accepts]: Start accepts. Automaton has 7563 states and 26796 transitions. Word has length 47 [2021-06-05 14:56:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:20,467 INFO L482 AbstractCegarLoop]: Abstraction has 7563 states and 26796 transitions. [2021-06-05 14:56:20,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 7563 states and 26796 transitions. [2021-06-05 14:56:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:20,477 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:20,477 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:20,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 14:56:20,477 INFO L430 AbstractCegarLoop]: === Iteration 151 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:20,478 INFO L82 PathProgramCache]: Analyzing trace with hash 200978940, now seen corresponding path program 151 times [2021-06-05 14:56:20,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:20,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823123070] [2021-06-05 14:56:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:20,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:20,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823123070] [2021-06-05 14:56:20,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823123070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:20,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:20,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:20,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139830929] [2021-06-05 14:56:20,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:20,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:20,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:20,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:20,683 INFO L87 Difference]: Start difference. First operand 7563 states and 26796 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:23,326 INFO L93 Difference]: Finished difference Result 11395 states and 40165 transitions. [2021-06-05 14:56:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 14:56:23,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:23,347 INFO L225 Difference]: With dead ends: 11395 [2021-06-05 14:56:23,347 INFO L226 Difference]: Without dead ends: 11268 [2021-06-05 14:56:23,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1428.7ms TimeCoverageRelationStatistics Valid=468, Invalid=5082, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 14:56:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11268 states. [2021-06-05 14:56:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11268 to 7585. [2021-06-05 14:56:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.5403481012658227) internal successors, (26850), 7584 states have internal predecessors, (26850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26850 transitions. [2021-06-05 14:56:23,486 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26850 transitions. Word has length 47 [2021-06-05 14:56:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:23,487 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26850 transitions. [2021-06-05 14:56:23,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26850 transitions. [2021-06-05 14:56:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:23,497 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:23,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:23,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 14:56:23,497 INFO L430 AbstractCegarLoop]: === Iteration 152 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:23,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1170218466, now seen corresponding path program 152 times [2021-06-05 14:56:23,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:23,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097328593] [2021-06-05 14:56:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:23,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:23,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097328593] [2021-06-05 14:56:23,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097328593] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:23,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:23,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:56:23,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201087698] [2021-06-05 14:56:23,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:56:23,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:56:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:56:23,693 INFO L87 Difference]: Start difference. First operand 7585 states and 26850 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:26,089 INFO L93 Difference]: Finished difference Result 11183 states and 39359 transitions. [2021-06-05 14:56:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 14:56:26,090 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:26,109 INFO L225 Difference]: With dead ends: 11183 [2021-06-05 14:56:26,110 INFO L226 Difference]: Without dead ends: 11083 [2021-06-05 14:56:26,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1284.3ms TimeCoverageRelationStatistics Valid=430, Invalid=4400, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 14:56:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2021-06-05 14:56:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 7594. [2021-06-05 14:56:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 3.539049124193336) internal successors, (26872), 7593 states have internal predecessors, (26872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 26872 transitions. [2021-06-05 14:56:26,243 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 26872 transitions. Word has length 47 [2021-06-05 14:56:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:26,243 INFO L482 AbstractCegarLoop]: Abstraction has 7594 states and 26872 transitions. [2021-06-05 14:56:26,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 26872 transitions. [2021-06-05 14:56:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:26,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:26,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:26,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 14:56:26,254 INFO L430 AbstractCegarLoop]: === Iteration 153 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:26,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1689681340, now seen corresponding path program 153 times [2021-06-05 14:56:26,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:26,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613987325] [2021-06-05 14:56:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:26,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:26,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613987325] [2021-06-05 14:56:26,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613987325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:26,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:26,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:26,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910562362] [2021-06-05 14:56:26,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:26,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:26,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:26,472 INFO L87 Difference]: Start difference. First operand 7594 states and 26872 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:29,352 INFO L93 Difference]: Finished difference Result 12148 states and 42969 transitions. [2021-06-05 14:56:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 14:56:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:29,374 INFO L225 Difference]: With dead ends: 12148 [2021-06-05 14:56:29,374 INFO L226 Difference]: Without dead ends: 12030 [2021-06-05 14:56:29,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1591.4ms TimeCoverageRelationStatistics Valid=552, Invalid=6090, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 14:56:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12030 states. [2021-06-05 14:56:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12030 to 7567. [2021-06-05 14:56:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7567 states, 7566 states have (on average 3.542426645519429) internal successors, (26802), 7566 states have internal predecessors, (26802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7567 states to 7567 states and 26802 transitions. [2021-06-05 14:56:29,514 INFO L78 Accepts]: Start accepts. Automaton has 7567 states and 26802 transitions. Word has length 47 [2021-06-05 14:56:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:29,514 INFO L482 AbstractCegarLoop]: Abstraction has 7567 states and 26802 transitions. [2021-06-05 14:56:29,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 7567 states and 26802 transitions. [2021-06-05 14:56:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:29,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:29,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:29,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 14:56:29,525 INFO L430 AbstractCegarLoop]: === Iteration 154 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1479925348, now seen corresponding path program 154 times [2021-06-05 14:56:29,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:29,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271721848] [2021-06-05 14:56:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:29,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:29,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271721848] [2021-06-05 14:56:29,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271721848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:29,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:29,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:29,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597883773] [2021-06-05 14:56:29,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:29,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:29,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:29,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:29,783 INFO L87 Difference]: Start difference. First operand 7567 states and 26802 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:33,024 INFO L93 Difference]: Finished difference Result 12460 states and 43711 transitions. [2021-06-05 14:56:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-05 14:56:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:33,045 INFO L225 Difference]: With dead ends: 12460 [2021-06-05 14:56:33,045 INFO L226 Difference]: Without dead ends: 12322 [2021-06-05 14:56:33,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2672 ImplicationChecksByTransitivity, 2046.9ms TimeCoverageRelationStatistics Valid=707, Invalid=7849, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 14:56:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2021-06-05 14:56:33,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 7573. [2021-06-05 14:56:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 7572 states have (on average 3.541336502905441) internal successors, (26815), 7572 states have internal predecessors, (26815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 26815 transitions. [2021-06-05 14:56:33,181 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 26815 transitions. Word has length 47 [2021-06-05 14:56:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:33,181 INFO L482 AbstractCegarLoop]: Abstraction has 7573 states and 26815 transitions. [2021-06-05 14:56:33,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 26815 transitions. [2021-06-05 14:56:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:33,191 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:33,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:33,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 14:56:33,191 INFO L430 AbstractCegarLoop]: === Iteration 155 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1651343000, now seen corresponding path program 155 times [2021-06-05 14:56:33,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:33,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892293428] [2021-06-05 14:56:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:33,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:33,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892293428] [2021-06-05 14:56:33,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892293428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:33,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:33,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:33,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703690335] [2021-06-05 14:56:33,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:33,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:33,422 INFO L87 Difference]: Start difference. First operand 7573 states and 26815 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:37,302 INFO L93 Difference]: Finished difference Result 13753 states and 48494 transitions. [2021-06-05 14:56:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-05 14:56:37,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:37,328 INFO L225 Difference]: With dead ends: 13753 [2021-06-05 14:56:37,328 INFO L226 Difference]: Without dead ends: 13658 [2021-06-05 14:56:37,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 2330.1ms TimeCoverageRelationStatistics Valid=827, Invalid=9679, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 14:56:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2021-06-05 14:56:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 7575. [2021-06-05 14:56:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 7574 states have (on average 3.541853710060734) internal successors, (26826), 7574 states have internal predecessors, (26826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 26826 transitions. [2021-06-05 14:56:37,491 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 26826 transitions. Word has length 47 [2021-06-05 14:56:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:37,491 INFO L482 AbstractCegarLoop]: Abstraction has 7575 states and 26826 transitions. [2021-06-05 14:56:37,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 26826 transitions. [2021-06-05 14:56:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:37,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:37,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:37,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 14:56:37,502 INFO L430 AbstractCegarLoop]: === Iteration 156 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash 198312758, now seen corresponding path program 156 times [2021-06-05 14:56:37,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:37,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581346974] [2021-06-05 14:56:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:37,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:37,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581346974] [2021-06-05 14:56:37,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581346974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:37,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:37,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:56:37,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422495713] [2021-06-05 14:56:37,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:56:37,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:37,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:56:37,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:56:37,705 INFO L87 Difference]: Start difference. First operand 7575 states and 26826 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:40,197 INFO L93 Difference]: Finished difference Result 11987 states and 42145 transitions. [2021-06-05 14:56:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 14:56:40,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:40,217 INFO L225 Difference]: With dead ends: 11987 [2021-06-05 14:56:40,217 INFO L226 Difference]: Without dead ends: 11887 [2021-06-05 14:56:40,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1420.5ms TimeCoverageRelationStatistics Valid=496, Invalid=5054, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 14:56:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2021-06-05 14:56:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 7584. [2021-06-05 14:56:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7583 states have (on average 3.540551233021232) internal successors, (26848), 7583 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 26848 transitions. [2021-06-05 14:56:40,355 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 26848 transitions. Word has length 47 [2021-06-05 14:56:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:40,355 INFO L482 AbstractCegarLoop]: Abstraction has 7584 states and 26848 transitions. [2021-06-05 14:56:40,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 26848 transitions. [2021-06-05 14:56:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:40,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:40,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:40,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 14:56:40,365 INFO L430 AbstractCegarLoop]: === Iteration 157 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash 132250200, now seen corresponding path program 157 times [2021-06-05 14:56:40,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:40,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988334631] [2021-06-05 14:56:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:40,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:40,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988334631] [2021-06-05 14:56:40,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988334631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:40,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:40,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:40,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237881473] [2021-06-05 14:56:40,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:40,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:40,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:40,574 INFO L87 Difference]: Start difference. First operand 7584 states and 26848 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:43,654 INFO L93 Difference]: Finished difference Result 12952 states and 45755 transitions. [2021-06-05 14:56:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 14:56:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:43,678 INFO L225 Difference]: With dead ends: 12952 [2021-06-05 14:56:43,678 INFO L226 Difference]: Without dead ends: 12846 [2021-06-05 14:56:43,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 1739.1ms TimeCoverageRelationStatistics Valid=629, Invalid=7027, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 14:56:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12846 states. [2021-06-05 14:56:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12846 to 7569. [2021-06-05 14:56:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7569 states, 7568 states have (on average 3.5429439746300213) internal successors, (26813), 7568 states have internal predecessors, (26813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 26813 transitions. [2021-06-05 14:56:43,829 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 26813 transitions. Word has length 47 [2021-06-05 14:56:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:43,829 INFO L482 AbstractCegarLoop]: Abstraction has 7569 states and 26813 transitions. [2021-06-05 14:56:43,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:43,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 26813 transitions. [2021-06-05 14:56:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:43,840 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:43,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:43,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 14:56:43,840 INFO L430 AbstractCegarLoop]: === Iteration 158 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:43,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1900030986, now seen corresponding path program 158 times [2021-06-05 14:56:43,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:43,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835484579] [2021-06-05 14:56:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:44,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:44,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835484579] [2021-06-05 14:56:44,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835484579] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:44,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:44,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:56:44,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924874983] [2021-06-05 14:56:44,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:56:44,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:44,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:56:44,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:56:44,037 INFO L87 Difference]: Start difference. First operand 7569 states and 26813 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:46,472 INFO L93 Difference]: Finished difference Result 10540 states and 36856 transitions. [2021-06-05 14:56:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 14:56:46,473 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:46,491 INFO L225 Difference]: With dead ends: 10540 [2021-06-05 14:56:46,491 INFO L226 Difference]: Without dead ends: 10403 [2021-06-05 14:56:46,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1421.2ms TimeCoverageRelationStatistics Valid=470, Invalid=4932, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 14:56:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10403 states. [2021-06-05 14:56:46,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10403 to 7605. [2021-06-05 14:56:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 7604 states have (on average 3.5380063124671226) internal successors, (26903), 7604 states have internal predecessors, (26903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 26903 transitions. [2021-06-05 14:56:46,627 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 26903 transitions. Word has length 47 [2021-06-05 14:56:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:46,627 INFO L482 AbstractCegarLoop]: Abstraction has 7605 states and 26903 transitions. [2021-06-05 14:56:46,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 26903 transitions. [2021-06-05 14:56:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:46,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:46,694 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:46,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 14:56:46,694 INFO L430 AbstractCegarLoop]: === Iteration 159 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash -265437258, now seen corresponding path program 159 times [2021-06-05 14:56:46,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:46,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365922466] [2021-06-05 14:56:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:46,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:46,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365922466] [2021-06-05 14:56:46,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365922466] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:46,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:46,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:46,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549321451] [2021-06-05 14:56:46,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:46,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:46,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:46,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:46,899 INFO L87 Difference]: Start difference. First operand 7605 states and 26903 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:50,140 INFO L93 Difference]: Finished difference Result 11201 states and 39141 transitions. [2021-06-05 14:56:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 14:56:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:50,159 INFO L225 Difference]: With dead ends: 11201 [2021-06-05 14:56:50,159 INFO L226 Difference]: Without dead ends: 11061 [2021-06-05 14:56:50,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 2024.1ms TimeCoverageRelationStatistics Valid=722, Invalid=8208, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 14:56:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2021-06-05 14:56:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 7587. [2021-06-05 14:56:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7586 states have (on average 3.5396783548642237) internal successors, (26852), 7586 states have internal predecessors, (26852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 26852 transitions. [2021-06-05 14:56:50,301 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 26852 transitions. Word has length 47 [2021-06-05 14:56:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:50,301 INFO L482 AbstractCegarLoop]: Abstraction has 7587 states and 26852 transitions. [2021-06-05 14:56:50,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 26852 transitions. [2021-06-05 14:56:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:50,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:50,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:50,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 14:56:50,311 INFO L430 AbstractCegarLoop]: === Iteration 160 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:50,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:50,311 INFO L82 PathProgramCache]: Analyzing trace with hash -698461800, now seen corresponding path program 160 times [2021-06-05 14:56:50,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:50,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082703735] [2021-06-05 14:56:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:50,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:50,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082703735] [2021-06-05 14:56:50,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082703735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:50,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:50,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:50,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370020818] [2021-06-05 14:56:50,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:50,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:50,521 INFO L87 Difference]: Start difference. First operand 7587 states and 26852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:56:56,266 INFO L93 Difference]: Finished difference Result 13812 states and 48433 transitions. [2021-06-05 14:56:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-06-05 14:56:56,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:56:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:56:56,291 INFO L225 Difference]: With dead ends: 13812 [2021-06-05 14:56:56,291 INFO L226 Difference]: Without dead ends: 13438 [2021-06-05 14:56:56,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6484 ImplicationChecksByTransitivity, 3582.1ms TimeCoverageRelationStatistics Valid=1374, Invalid=16716, Unknown=0, NotChecked=0, Total=18090 [2021-06-05 14:56:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2021-06-05 14:56:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 7810. [2021-06-05 14:56:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7810 states, 7809 states have (on average 3.5375848380074273) internal successors, (27625), 7809 states have internal predecessors, (27625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 27625 transitions. [2021-06-05 14:56:56,449 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 27625 transitions. Word has length 47 [2021-06-05 14:56:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:56:56,449 INFO L482 AbstractCegarLoop]: Abstraction has 7810 states and 27625 transitions. [2021-06-05 14:56:56,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:56:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 27625 transitions. [2021-06-05 14:56:56,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:56:56,459 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:56:56,459 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:56:56,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 14:56:56,460 INFO L430 AbstractCegarLoop]: === Iteration 161 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:56:56,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:56:56,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1549113708, now seen corresponding path program 161 times [2021-06-05 14:56:56,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:56:56,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949978464] [2021-06-05 14:56:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:56:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:56:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:56:56,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:56:56,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949978464] [2021-06-05 14:56:56,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949978464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:56:56,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:56:56,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:56:56,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330883337] [2021-06-05 14:56:56,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:56:56,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:56:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:56:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:56:56,664 INFO L87 Difference]: Start difference. First operand 7810 states and 27625 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:02,035 INFO L93 Difference]: Finished difference Result 13744 states and 48414 transitions. [2021-06-05 14:57:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-06-05 14:57:02,036 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:02,060 INFO L225 Difference]: With dead ends: 13744 [2021-06-05 14:57:02,060 INFO L226 Difference]: Without dead ends: 13521 [2021-06-05 14:57:02,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5433 ImplicationChecksByTransitivity, 3194.9ms TimeCoverageRelationStatistics Valid=1224, Invalid=14276, Unknown=0, NotChecked=0, Total=15500 [2021-06-05 14:57:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13521 states. [2021-06-05 14:57:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13521 to 7542. [2021-06-05 14:57:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7542 states, 7541 states have (on average 3.536931441453388) internal successors, (26672), 7541 states have internal predecessors, (26672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 26672 transitions. [2021-06-05 14:57:02,207 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 26672 transitions. Word has length 47 [2021-06-05 14:57:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:02,208 INFO L482 AbstractCegarLoop]: Abstraction has 7542 states and 26672 transitions. [2021-06-05 14:57:02,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 26672 transitions. [2021-06-05 14:57:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:02,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:02,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:02,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 14:57:02,218 INFO L430 AbstractCegarLoop]: === Iteration 162 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1656483066, now seen corresponding path program 162 times [2021-06-05 14:57:02,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:02,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121569203] [2021-06-05 14:57:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:02,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:02,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121569203] [2021-06-05 14:57:02,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121569203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:02,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:02,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:57:02,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073937598] [2021-06-05 14:57:02,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:57:02,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:02,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:57:02,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:57:02,470 INFO L87 Difference]: Start difference. First operand 7542 states and 26672 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:05,916 INFO L93 Difference]: Finished difference Result 12404 states and 43474 transitions. [2021-06-05 14:57:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 14:57:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:05,938 INFO L225 Difference]: With dead ends: 12404 [2021-06-05 14:57:05,938 INFO L226 Difference]: Without dead ends: 12282 [2021-06-05 14:57:05,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 2156.8ms TimeCoverageRelationStatistics Valid=752, Invalid=8560, Unknown=0, NotChecked=0, Total=9312 [2021-06-05 14:57:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-06-05 14:57:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 7548. [2021-06-05 14:57:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7548 states, 7547 states have (on average 3.53584205644627) internal successors, (26685), 7547 states have internal predecessors, (26685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 26685 transitions. [2021-06-05 14:57:06,094 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 26685 transitions. Word has length 47 [2021-06-05 14:57:06,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:06,094 INFO L482 AbstractCegarLoop]: Abstraction has 7548 states and 26685 transitions. [2021-06-05 14:57:06,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 26685 transitions. [2021-06-05 14:57:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:06,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:06,105 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:06,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 14:57:06,105 INFO L430 AbstractCegarLoop]: === Iteration 163 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:06,106 INFO L82 PathProgramCache]: Analyzing trace with hash 492784118, now seen corresponding path program 163 times [2021-06-05 14:57:06,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:06,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588892348] [2021-06-05 14:57:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:06,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:06,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588892348] [2021-06-05 14:57:06,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588892348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:06,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:06,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:57:06,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748762216] [2021-06-05 14:57:06,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:57:06,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:06,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:57:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:57:06,317 INFO L87 Difference]: Start difference. First operand 7548 states and 26685 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:10,128 INFO L93 Difference]: Finished difference Result 13260 states and 46655 transitions. [2021-06-05 14:57:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-06-05 14:57:10,129 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:10,154 INFO L225 Difference]: With dead ends: 13260 [2021-06-05 14:57:10,154 INFO L226 Difference]: Without dead ends: 13145 [2021-06-05 14:57:10,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3332 ImplicationChecksByTransitivity, 2271.0ms TimeCoverageRelationStatistics Valid=809, Invalid=9493, Unknown=0, NotChecked=0, Total=10302 [2021-06-05 14:57:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13145 states. [2021-06-05 14:57:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13145 to 7550. [2021-06-05 14:57:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7550 states, 7549 states have (on average 3.5355676248509735) internal successors, (26690), 7549 states have internal predecessors, (26690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 26690 transitions. [2021-06-05 14:57:10,299 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 26690 transitions. Word has length 47 [2021-06-05 14:57:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:10,299 INFO L482 AbstractCegarLoop]: Abstraction has 7550 states and 26690 transitions. [2021-06-05 14:57:10,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 26690 transitions. [2021-06-05 14:57:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:10,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:10,309 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:10,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 14:57:10,309 INFO L430 AbstractCegarLoop]: === Iteration 164 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:10,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:10,309 INFO L82 PathProgramCache]: Analyzing trace with hash -960246124, now seen corresponding path program 164 times [2021-06-05 14:57:10,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:10,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271271304] [2021-06-05 14:57:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:10,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:10,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271271304] [2021-06-05 14:57:10,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271271304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:10,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:10,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:57:10,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072372363] [2021-06-05 14:57:10,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:57:10,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:10,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:57:10,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:57:10,513 INFO L87 Difference]: Start difference. First operand 7550 states and 26690 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:13,024 INFO L93 Difference]: Finished difference Result 11476 states and 40361 transitions. [2021-06-05 14:57:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 14:57:13,025 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:13,043 INFO L225 Difference]: With dead ends: 11476 [2021-06-05 14:57:13,044 INFO L226 Difference]: Without dead ends: 11376 [2021-06-05 14:57:13,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 1391.1ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 14:57:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2021-06-05 14:57:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 7559. [2021-06-05 14:57:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 7558 states have (on average 3.5342683249536915) internal successors, (26712), 7558 states have internal predecessors, (26712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 26712 transitions. [2021-06-05 14:57:13,171 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 26712 transitions. Word has length 47 [2021-06-05 14:57:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:13,171 INFO L482 AbstractCegarLoop]: Abstraction has 7559 states and 26712 transitions. [2021-06-05 14:57:13,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 26712 transitions. [2021-06-05 14:57:13,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:13,181 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:13,181 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:13,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 14:57:13,181 INFO L430 AbstractCegarLoop]: === Iteration 165 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:13,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1026308682, now seen corresponding path program 165 times [2021-06-05 14:57:13,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:13,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937571954] [2021-06-05 14:57:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:13,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:13,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937571954] [2021-06-05 14:57:13,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937571954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:13,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:13,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:57:13,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3876267] [2021-06-05 14:57:13,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:57:13,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:57:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:57:13,403 INFO L87 Difference]: Start difference. First operand 7559 states and 26712 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:16,218 INFO L93 Difference]: Finished difference Result 12033 states and 42383 transitions. [2021-06-05 14:57:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 14:57:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:16,239 INFO L225 Difference]: With dead ends: 12033 [2021-06-05 14:57:16,239 INFO L226 Difference]: Without dead ends: 11913 [2021-06-05 14:57:16,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1608.0ms TimeCoverageRelationStatistics Valid=536, Invalid=5944, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 14:57:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11913 states. [2021-06-05 14:57:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11913 to 7530. [2021-06-05 14:57:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7529 states have (on average 3.539115420374552) internal successors, (26646), 7529 states have internal predecessors, (26646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 26646 transitions. [2021-06-05 14:57:16,379 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 26646 transitions. Word has length 47 [2021-06-05 14:57:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:16,379 INFO L482 AbstractCegarLoop]: Abstraction has 7530 states and 26646 transitions. [2021-06-05 14:57:16,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 26646 transitions. [2021-06-05 14:57:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:16,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:16,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:16,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 14:57:16,390 INFO L430 AbstractCegarLoop]: === Iteration 166 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:16,390 INFO L82 PathProgramCache]: Analyzing trace with hash -758680900, now seen corresponding path program 166 times [2021-06-05 14:57:16,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:16,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078127864] [2021-06-05 14:57:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:16,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:16,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078127864] [2021-06-05 14:57:16,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078127864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:16,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:16,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:57:16,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422786249] [2021-06-05 14:57:16,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:57:16,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:57:16,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:57:16,584 INFO L87 Difference]: Start difference. First operand 7530 states and 26646 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:19,464 INFO L93 Difference]: Finished difference Result 10968 states and 38743 transitions. [2021-06-05 14:57:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 14:57:19,464 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:19,483 INFO L225 Difference]: With dead ends: 10968 [2021-06-05 14:57:19,483 INFO L226 Difference]: Without dead ends: 10735 [2021-06-05 14:57:19,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1623.4ms TimeCoverageRelationStatistics Valid=551, Invalid=5769, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 14:57:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2021-06-05 14:57:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 7640. [2021-06-05 14:57:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7640 states, 7639 states have (on average 3.537243094645896) internal successors, (27021), 7639 states have internal predecessors, (27021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7640 states to 7640 states and 27021 transitions. [2021-06-05 14:57:19,619 INFO L78 Accepts]: Start accepts. Automaton has 7640 states and 27021 transitions. Word has length 47 [2021-06-05 14:57:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:19,619 INFO L482 AbstractCegarLoop]: Abstraction has 7640 states and 27021 transitions. [2021-06-05 14:57:19,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7640 states and 27021 transitions. [2021-06-05 14:57:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:19,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:19,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:19,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 14:57:19,630 INFO L430 AbstractCegarLoop]: === Iteration 167 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1541935238, now seen corresponding path program 167 times [2021-06-05 14:57:19,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:19,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364857853] [2021-06-05 14:57:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:19,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:19,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364857853] [2021-06-05 14:57:19,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364857853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:19,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:19,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:57:19,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681898380] [2021-06-05 14:57:19,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:57:19,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:19,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:57:19,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:57:19,820 INFO L87 Difference]: Start difference. First operand 7640 states and 27021 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:25,041 INFO L93 Difference]: Finished difference Result 14411 states and 50935 transitions. [2021-06-05 14:57:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-06-05 14:57:25,041 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:25,067 INFO L225 Difference]: With dead ends: 14411 [2021-06-05 14:57:25,068 INFO L226 Difference]: Without dead ends: 14023 [2021-06-05 14:57:25,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5831 ImplicationChecksByTransitivity, 3290.0ms TimeCoverageRelationStatistics Valid=1330, Invalid=14926, Unknown=0, NotChecked=0, Total=16256 [2021-06-05 14:57:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2021-06-05 14:57:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 8088. [2021-06-05 14:57:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8088 states, 8087 states have (on average 3.547174477556572) internal successors, (28686), 8087 states have internal predecessors, (28686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 28686 transitions. [2021-06-05 14:57:25,233 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 28686 transitions. Word has length 47 [2021-06-05 14:57:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:25,233 INFO L482 AbstractCegarLoop]: Abstraction has 8088 states and 28686 transitions. [2021-06-05 14:57:25,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 28686 transitions. [2021-06-05 14:57:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:25,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:25,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:25,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 14:57:25,244 INFO L430 AbstractCegarLoop]: === Iteration 168 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:25,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1902380150, now seen corresponding path program 168 times [2021-06-05 14:57:25,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:25,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886942081] [2021-06-05 14:57:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:25,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:25,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886942081] [2021-06-05 14:57:25,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886942081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:25,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:25,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:57:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299308178] [2021-06-05 14:57:25,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:57:25,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:57:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:57:25,436 INFO L87 Difference]: Start difference. First operand 8088 states and 28686 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:29,696 INFO L93 Difference]: Finished difference Result 14138 states and 50378 transitions. [2021-06-05 14:57:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-06-05 14:57:29,696 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:29,723 INFO L225 Difference]: With dead ends: 14138 [2021-06-05 14:57:29,723 INFO L226 Difference]: Without dead ends: 13929 [2021-06-05 14:57:29,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4288 ImplicationChecksByTransitivity, 2552.8ms TimeCoverageRelationStatistics Valid=977, Invalid=11455, Unknown=0, NotChecked=0, Total=12432 [2021-06-05 14:57:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13929 states. [2021-06-05 14:57:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13929 to 8086. [2021-06-05 14:57:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8085 states have (on average 3.5500309214594927) internal successors, (28702), 8085 states have internal predecessors, (28702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 28702 transitions. [2021-06-05 14:57:29,888 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 28702 transitions. Word has length 47 [2021-06-05 14:57:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:29,888 INFO L482 AbstractCegarLoop]: Abstraction has 8086 states and 28702 transitions. [2021-06-05 14:57:29,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 28702 transitions. [2021-06-05 14:57:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:29,899 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:29,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:29,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 14:57:29,899 INFO L430 AbstractCegarLoop]: === Iteration 169 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash -216779594, now seen corresponding path program 169 times [2021-06-05 14:57:29,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:29,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592531095] [2021-06-05 14:57:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:30,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:30,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592531095] [2021-06-05 14:57:30,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592531095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:30,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:30,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 14:57:30,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516925292] [2021-06-05 14:57:30,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 14:57:30,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:30,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 14:57:30,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-06-05 14:57:30,147 INFO L87 Difference]: Start difference. First operand 8086 states and 28702 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:34,241 INFO L93 Difference]: Finished difference Result 12863 states and 44759 transitions. [2021-06-05 14:57:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-06-05 14:57:34,241 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:34,264 INFO L225 Difference]: With dead ends: 12863 [2021-06-05 14:57:34,264 INFO L226 Difference]: Without dead ends: 12427 [2021-06-05 14:57:34,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3987 ImplicationChecksByTransitivity, 2476.6ms TimeCoverageRelationStatistics Valid=929, Invalid=10627, Unknown=0, NotChecked=0, Total=11556 [2021-06-05 14:57:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12427 states. [2021-06-05 14:57:34,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12427 to 8011. [2021-06-05 14:57:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8011 states, 8010 states have (on average 3.5363295880149814) internal successors, (28326), 8010 states have internal predecessors, (28326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8011 states to 8011 states and 28326 transitions. [2021-06-05 14:57:34,451 INFO L78 Accepts]: Start accepts. Automaton has 8011 states and 28326 transitions. Word has length 47 [2021-06-05 14:57:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:34,451 INFO L482 AbstractCegarLoop]: Abstraction has 8011 states and 28326 transitions. [2021-06-05 14:57:34,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8011 states and 28326 transitions. [2021-06-05 14:57:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:34,461 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:34,461 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:34,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 14:57:34,462 INFO L430 AbstractCegarLoop]: === Iteration 170 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2099313240, now seen corresponding path program 170 times [2021-06-05 14:57:34,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:34,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833426583] [2021-06-05 14:57:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:34,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:34,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833426583] [2021-06-05 14:57:34,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833426583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:34,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:34,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:57:34,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795487503] [2021-06-05 14:57:34,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:57:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:57:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:57:34,652 INFO L87 Difference]: Start difference. First operand 8011 states and 28326 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:39,837 INFO L93 Difference]: Finished difference Result 14239 states and 50041 transitions. [2021-06-05 14:57:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-06-05 14:57:39,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:39,863 INFO L225 Difference]: With dead ends: 14239 [2021-06-05 14:57:39,863 INFO L226 Difference]: Without dead ends: 13996 [2021-06-05 14:57:39,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5216 ImplicationChecksByTransitivity, 2995.6ms TimeCoverageRelationStatistics Valid=1170, Invalid=13592, Unknown=0, NotChecked=0, Total=14762 [2021-06-05 14:57:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13996 states. [2021-06-05 14:57:40,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13996 to 7879. [2021-06-05 14:57:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7879 states, 7878 states have (on average 3.535034272658035) internal successors, (27849), 7878 states have internal predecessors, (27849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 27849 transitions. [2021-06-05 14:57:40,026 INFO L78 Accepts]: Start accepts. Automaton has 7879 states and 27849 transitions. Word has length 47 [2021-06-05 14:57:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:40,026 INFO L482 AbstractCegarLoop]: Abstraction has 7879 states and 27849 transitions. [2021-06-05 14:57:40,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 7879 states and 27849 transitions. [2021-06-05 14:57:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:40,036 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:40,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:40,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 14:57:40,037 INFO L430 AbstractCegarLoop]: === Iteration 171 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:40,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1248661332, now seen corresponding path program 171 times [2021-06-05 14:57:40,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:40,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352219200] [2021-06-05 14:57:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:40,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:40,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352219200] [2021-06-05 14:57:40,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352219200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:40,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:40,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:57:40,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74253132] [2021-06-05 14:57:40,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:57:40,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:57:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:57:40,224 INFO L87 Difference]: Start difference. First operand 7879 states and 27849 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:45,212 INFO L93 Difference]: Finished difference Result 14617 states and 51563 transitions. [2021-06-05 14:57:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-06-05 14:57:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:45,239 INFO L225 Difference]: With dead ends: 14617 [2021-06-05 14:57:45,239 INFO L226 Difference]: Without dead ends: 14356 [2021-06-05 14:57:45,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5019 ImplicationChecksByTransitivity, 2872.5ms TimeCoverageRelationStatistics Valid=1131, Invalid=13149, Unknown=0, NotChecked=0, Total=14280 [2021-06-05 14:57:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-06-05 14:57:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 7709. [2021-06-05 14:57:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7709 states, 7708 states have (on average 3.5377529839128177) internal successors, (27269), 7708 states have internal predecessors, (27269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 27269 transitions. [2021-06-05 14:57:45,395 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 27269 transitions. Word has length 47 [2021-06-05 14:57:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:45,396 INFO L482 AbstractCegarLoop]: Abstraction has 7709 states and 27269 transitions. [2021-06-05 14:57:45,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 27269 transitions. [2021-06-05 14:57:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:45,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:45,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:45,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 14:57:45,406 INFO L430 AbstractCegarLoop]: === Iteration 172 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:45,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1104012510, now seen corresponding path program 172 times [2021-06-05 14:57:45,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:45,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282520311] [2021-06-05 14:57:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:45,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:45,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282520311] [2021-06-05 14:57:45,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282520311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:45,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:45,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:57:45,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526000179] [2021-06-05 14:57:45,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:57:45,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:57:45,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:57:45,643 INFO L87 Difference]: Start difference. First operand 7709 states and 27269 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:48,827 INFO L93 Difference]: Finished difference Result 11299 states and 39822 transitions. [2021-06-05 14:57:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 14:57:48,827 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:48,846 INFO L225 Difference]: With dead ends: 11299 [2021-06-05 14:57:48,846 INFO L226 Difference]: Without dead ends: 11172 [2021-06-05 14:57:48,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 1870.4ms TimeCoverageRelationStatistics Valid=630, Invalid=7202, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 14:57:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2021-06-05 14:57:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 7723. [2021-06-05 14:57:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 7722 states have (on average 3.5362600362600363) internal successors, (27307), 7722 states have internal predecessors, (27307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 27307 transitions. [2021-06-05 14:57:48,986 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 27307 transitions. Word has length 47 [2021-06-05 14:57:48,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:48,986 INFO L482 AbstractCegarLoop]: Abstraction has 7723 states and 27307 transitions. [2021-06-05 14:57:48,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 27307 transitions. [2021-06-05 14:57:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:48,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:48,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:48,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 14:57:48,997 INFO L430 AbstractCegarLoop]: === Iteration 173 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:48,997 INFO L82 PathProgramCache]: Analyzing trace with hash 320758172, now seen corresponding path program 173 times [2021-06-05 14:57:48,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:48,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858272894] [2021-06-05 14:57:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:49,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:49,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858272894] [2021-06-05 14:57:49,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858272894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:49,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:49,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:57:49,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551364190] [2021-06-05 14:57:49,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:57:49,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:49,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:57:49,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:57:49,200 INFO L87 Difference]: Start difference. First operand 7723 states and 27307 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:54,643 INFO L93 Difference]: Finished difference Result 14753 states and 52239 transitions. [2021-06-05 14:57:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-06-05 14:57:54,643 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:54,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:54,671 INFO L225 Difference]: With dead ends: 14753 [2021-06-05 14:57:54,671 INFO L226 Difference]: Without dead ends: 14664 [2021-06-05 14:57:54,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6414 ImplicationChecksByTransitivity, 3333.0ms TimeCoverageRelationStatistics Valid=1380, Invalid=16442, Unknown=0, NotChecked=0, Total=17822 [2021-06-05 14:57:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14664 states. [2021-06-05 14:57:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14664 to 7739. [2021-06-05 14:57:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7739 states, 7738 states have (on average 3.53489273714138) internal successors, (27353), 7738 states have internal predecessors, (27353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 27353 transitions. [2021-06-05 14:57:54,838 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 27353 transitions. Word has length 47 [2021-06-05 14:57:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:54,838 INFO L482 AbstractCegarLoop]: Abstraction has 7739 states and 27353 transitions. [2021-06-05 14:57:54,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 27353 transitions. [2021-06-05 14:57:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:54,848 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:54,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:54,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 14:57:54,849 INFO L430 AbstractCegarLoop]: === Iteration 174 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash -529893736, now seen corresponding path program 174 times [2021-06-05 14:57:54,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:54,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661600018] [2021-06-05 14:57:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:57:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:57:55,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:57:55,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661600018] [2021-06-05 14:57:55,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661600018] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:57:55,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:57:55,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:57:55,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915238870] [2021-06-05 14:57:55,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:57:55,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:57:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:57:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:57:55,061 INFO L87 Difference]: Start difference. First operand 7739 states and 27353 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:59,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:57:59,762 INFO L93 Difference]: Finished difference Result 14273 states and 50778 transitions. [2021-06-05 14:57:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-06-05 14:57:59,762 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:57:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:57:59,789 INFO L225 Difference]: With dead ends: 14273 [2021-06-05 14:57:59,789 INFO L226 Difference]: Without dead ends: 14170 [2021-06-05 14:57:59,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5061 ImplicationChecksByTransitivity, 2809.1ms TimeCoverageRelationStatistics Valid=1067, Invalid=13453, Unknown=0, NotChecked=0, Total=14520 [2021-06-05 14:57:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14170 states. [2021-06-05 14:57:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14170 to 7719. [2021-06-05 14:57:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7719 states, 7718 states have (on average 3.5373153666753043) internal successors, (27301), 7718 states have internal predecessors, (27301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7719 states to 7719 states and 27301 transitions. [2021-06-05 14:57:59,951 INFO L78 Accepts]: Start accepts. Automaton has 7719 states and 27301 transitions. Word has length 47 [2021-06-05 14:57:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:57:59,951 INFO L482 AbstractCegarLoop]: Abstraction has 7719 states and 27301 transitions. [2021-06-05 14:57:59,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:57:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7719 states and 27301 transitions. [2021-06-05 14:57:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:57:59,962 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:57:59,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:57:59,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 14:57:59,962 INFO L430 AbstractCegarLoop]: === Iteration 175 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:57:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:57:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1649031428, now seen corresponding path program 175 times [2021-06-05 14:57:59,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:57:59,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270721795] [2021-06-05 14:57:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:57:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:00,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:00,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270721795] [2021-06-05 14:58:00,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270721795] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:00,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:00,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:00,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084830692] [2021-06-05 14:58:00,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:00,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:00,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:00,168 INFO L87 Difference]: Start difference. First operand 7719 states and 27301 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:02,798 INFO L93 Difference]: Finished difference Result 10633 states and 37445 transitions. [2021-06-05 14:58:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 14:58:02,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:02,817 INFO L225 Difference]: With dead ends: 10633 [2021-06-05 14:58:02,818 INFO L226 Difference]: Without dead ends: 10506 [2021-06-05 14:58:02,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1407.2ms TimeCoverageRelationStatistics Valid=463, Invalid=5237, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 14:58:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10506 states. [2021-06-05 14:58:02,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10506 to 7735. [2021-06-05 14:58:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 7734 states have (on average 3.535169381949832) internal successors, (27341), 7734 states have internal predecessors, (27341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 27341 transitions. [2021-06-05 14:58:02,950 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 27341 transitions. Word has length 47 [2021-06-05 14:58:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:02,950 INFO L482 AbstractCegarLoop]: Abstraction has 7735 states and 27341 transitions. [2021-06-05 14:58:02,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 27341 transitions. [2021-06-05 14:58:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:02,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:02,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:02,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 14:58:02,962 INFO L430 AbstractCegarLoop]: === Iteration 176 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 178339832, now seen corresponding path program 176 times [2021-06-05 14:58:02,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:02,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091476000] [2021-06-05 14:58:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:03,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:03,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091476000] [2021-06-05 14:58:03,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091476000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:03,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:03,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:58:03,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690970408] [2021-06-05 14:58:03,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:58:03,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:03,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:58:03,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:58:03,160 INFO L87 Difference]: Start difference. First operand 7735 states and 27341 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:05,430 INFO L93 Difference]: Finished difference Result 9833 states and 34722 transitions. [2021-06-05 14:58:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 14:58:05,431 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:05,448 INFO L225 Difference]: With dead ends: 9833 [2021-06-05 14:58:05,448 INFO L226 Difference]: Without dead ends: 9736 [2021-06-05 14:58:05,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1312.6ms TimeCoverageRelationStatistics Valid=425, Invalid=4545, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 14:58:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-06-05 14:58:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 7741. [2021-06-05 14:58:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7741 states, 7740 states have (on average 3.5343669250645995) internal successors, (27356), 7740 states have internal predecessors, (27356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 27356 transitions. [2021-06-05 14:58:05,585 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 27356 transitions. Word has length 47 [2021-06-05 14:58:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:05,585 INFO L482 AbstractCegarLoop]: Abstraction has 7741 states and 27356 transitions. [2021-06-05 14:58:05,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 27356 transitions. [2021-06-05 14:58:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:05,596 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:05,596 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:05,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 14:58:05,596 INFO L430 AbstractCegarLoop]: === Iteration 177 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:05,596 INFO L82 PathProgramCache]: Analyzing trace with hash 181013658, now seen corresponding path program 177 times [2021-06-05 14:58:05,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:05,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252672938] [2021-06-05 14:58:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:05,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:05,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252672938] [2021-06-05 14:58:05,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252672938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:05,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:05,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:05,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782590793] [2021-06-05 14:58:05,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:05,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:05,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:05,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:05,808 INFO L87 Difference]: Start difference. First operand 7741 states and 27356 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:08,599 INFO L93 Difference]: Finished difference Result 10505 states and 37061 transitions. [2021-06-05 14:58:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 14:58:08,599 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:08,617 INFO L225 Difference]: With dead ends: 10505 [2021-06-05 14:58:08,618 INFO L226 Difference]: Without dead ends: 10396 [2021-06-05 14:58:08,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1602.6ms TimeCoverageRelationStatistics Valid=547, Invalid=6095, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 14:58:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10396 states. [2021-06-05 14:58:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10396 to 7723. [2021-06-05 14:58:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 7722 states have (on average 3.5362600362600363) internal successors, (27307), 7722 states have internal predecessors, (27307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 27307 transitions. [2021-06-05 14:58:08,827 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 27307 transitions. Word has length 47 [2021-06-05 14:58:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:08,827 INFO L482 AbstractCegarLoop]: Abstraction has 7723 states and 27307 transitions. [2021-06-05 14:58:08,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 27307 transitions. [2021-06-05 14:58:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:08,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:08,837 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:08,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 14:58:08,837 INFO L430 AbstractCegarLoop]: === Iteration 178 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash -559963748, now seen corresponding path program 178 times [2021-06-05 14:58:08,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:08,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107063879] [2021-06-05 14:58:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:09,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:09,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107063879] [2021-06-05 14:58:09,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107063879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:09,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:09,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:09,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534469149] [2021-06-05 14:58:09,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:09,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:09,068 INFO L87 Difference]: Start difference. First operand 7723 states and 27307 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:13,683 INFO L93 Difference]: Finished difference Result 12486 states and 43792 transitions. [2021-06-05 14:58:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-06-05 14:58:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:13,704 INFO L225 Difference]: With dead ends: 12486 [2021-06-05 14:58:13,705 INFO L226 Difference]: Without dead ends: 12268 [2021-06-05 14:58:13,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 3019.7ms TimeCoverageRelationStatistics Valid=1183, Invalid=14069, Unknown=0, NotChecked=0, Total=15252 [2021-06-05 14:58:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2021-06-05 14:58:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 8026. [2021-06-05 14:58:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8026 states, 8025 states have (on average 3.5418068535825546) internal successors, (28423), 8025 states have internal predecessors, (28423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 28423 transitions. [2021-06-05 14:58:13,848 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 28423 transitions. Word has length 47 [2021-06-05 14:58:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:13,848 INFO L482 AbstractCegarLoop]: Abstraction has 8026 states and 28423 transitions. [2021-06-05 14:58:13,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 28423 transitions. [2021-06-05 14:58:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:13,858 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:13,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:13,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 14:58:13,858 INFO L430 AbstractCegarLoop]: === Iteration 179 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1011457688, now seen corresponding path program 179 times [2021-06-05 14:58:13,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:13,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974409625] [2021-06-05 14:58:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:14,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:14,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974409625] [2021-06-05 14:58:14,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974409625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:14,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:14,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:14,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881537513] [2021-06-05 14:58:14,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:14,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:14,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:14,063 INFO L87 Difference]: Start difference. First operand 8026 states and 28423 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:19,570 INFO L93 Difference]: Finished difference Result 14219 states and 50372 transitions. [2021-06-05 14:58:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-06-05 14:58:19,570 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:19,596 INFO L225 Difference]: With dead ends: 14219 [2021-06-05 14:58:19,596 INFO L226 Difference]: Without dead ends: 14124 [2021-06-05 14:58:19,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7407 ImplicationChecksByTransitivity, 3436.0ms TimeCoverageRelationStatistics Valid=1427, Invalid=18879, Unknown=0, NotChecked=0, Total=20306 [2021-06-05 14:58:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14124 states. [2021-06-05 14:58:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14124 to 8026. [2021-06-05 14:58:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8026 states, 8025 states have (on average 3.5418068535825546) internal successors, (28423), 8025 states have internal predecessors, (28423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 28423 transitions. [2021-06-05 14:58:19,752 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 28423 transitions. Word has length 47 [2021-06-05 14:58:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:19,753 INFO L482 AbstractCegarLoop]: Abstraction has 8026 states and 28423 transitions. [2021-06-05 14:58:19,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 28423 transitions. [2021-06-05 14:58:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:19,763 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:19,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:19,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 14:58:19,763 INFO L430 AbstractCegarLoop]: === Iteration 180 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1310349366, now seen corresponding path program 180 times [2021-06-05 14:58:19,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:19,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999375173] [2021-06-05 14:58:19,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:19,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:19,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999375173] [2021-06-05 14:58:19,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999375173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:19,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:19,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:58:19,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039579638] [2021-06-05 14:58:19,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:58:19,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:19,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:58:19,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:58:19,960 INFO L87 Difference]: Start difference. First operand 8026 states and 28423 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:23,042 INFO L93 Difference]: Finished difference Result 11464 states and 40386 transitions. [2021-06-05 14:58:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-05 14:58:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:23,061 INFO L225 Difference]: With dead ends: 11464 [2021-06-05 14:58:23,061 INFO L226 Difference]: Without dead ends: 11367 [2021-06-05 14:58:23,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2673 ImplicationChecksByTransitivity, 1835.5ms TimeCoverageRelationStatistics Valid=647, Invalid=7725, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 14:58:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2021-06-05 14:58:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 8034. [2021-06-05 14:58:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8034 states, 8033 states have (on average 3.5405203535416407) internal successors, (28441), 8033 states have internal predecessors, (28441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8034 states to 8034 states and 28441 transitions. [2021-06-05 14:58:23,204 INFO L78 Accepts]: Start accepts. Automaton has 8034 states and 28441 transitions. Word has length 47 [2021-06-05 14:58:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:23,204 INFO L482 AbstractCegarLoop]: Abstraction has 8034 states and 28441 transitions. [2021-06-05 14:58:23,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8034 states and 28441 transitions. [2021-06-05 14:58:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:23,216 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:23,216 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:23,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 14:58:23,216 INFO L430 AbstractCegarLoop]: === Iteration 181 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:23,216 INFO L82 PathProgramCache]: Analyzing trace with hash -415071144, now seen corresponding path program 181 times [2021-06-05 14:58:23,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:23,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212690635] [2021-06-05 14:58:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:23,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:23,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212690635] [2021-06-05 14:58:23,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212690635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:23,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:23,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:23,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762569413] [2021-06-05 14:58:23,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:23,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:23,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:23,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:23,420 INFO L87 Difference]: Start difference. First operand 8034 states and 28441 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:27,185 INFO L93 Difference]: Finished difference Result 11873 states and 41988 transitions. [2021-06-05 14:58:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-06-05 14:58:27,186 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:27,206 INFO L225 Difference]: With dead ends: 11873 [2021-06-05 14:58:27,206 INFO L226 Difference]: Without dead ends: 11770 [2021-06-05 14:58:27,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3798 ImplicationChecksByTransitivity, 2417.8ms TimeCoverageRelationStatistics Valid=953, Invalid=10603, Unknown=0, NotChecked=0, Total=11556 [2021-06-05 14:58:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11770 states. [2021-06-05 14:58:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11770 to 8022. [2021-06-05 14:58:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 8021 states have (on average 3.5423263932178033) internal successors, (28413), 8021 states have internal predecessors, (28413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 28413 transitions. [2021-06-05 14:58:27,350 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 28413 transitions. Word has length 47 [2021-06-05 14:58:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:27,350 INFO L482 AbstractCegarLoop]: Abstraction has 8022 states and 28413 transitions. [2021-06-05 14:58:27,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 28413 transitions. [2021-06-05 14:58:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:27,361 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:27,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:27,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 14:58:27,361 INFO L430 AbstractCegarLoop]: === Iteration 182 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1655539958, now seen corresponding path program 182 times [2021-06-05 14:58:27,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:27,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988733147] [2021-06-05 14:58:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:27,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:27,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988733147] [2021-06-05 14:58:27,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988733147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:27,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:27,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:58:27,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870186624] [2021-06-05 14:58:27,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:58:27,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:58:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:58:27,559 INFO L87 Difference]: Start difference. First operand 8022 states and 28413 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:31,352 INFO L93 Difference]: Finished difference Result 11696 states and 41074 transitions. [2021-06-05 14:58:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-06-05 14:58:31,352 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:31,372 INFO L225 Difference]: With dead ends: 11696 [2021-06-05 14:58:31,372 INFO L226 Difference]: Without dead ends: 11462 [2021-06-05 14:58:31,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3751 ImplicationChecksByTransitivity, 2345.2ms TimeCoverageRelationStatistics Valid=899, Invalid=10231, Unknown=0, NotChecked=0, Total=11130 [2021-06-05 14:58:31,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-06-05 14:58:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 8168. [2021-06-05 14:58:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8168 states, 8167 states have (on average 3.5452430513040283) internal successors, (28954), 8167 states have internal predecessors, (28954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 28954 transitions. [2021-06-05 14:58:31,514 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 28954 transitions. Word has length 47 [2021-06-05 14:58:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:31,514 INFO L482 AbstractCegarLoop]: Abstraction has 8168 states and 28954 transitions. [2021-06-05 14:58:31,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 28954 transitions. [2021-06-05 14:58:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:31,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:31,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:31,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 14:58:31,525 INFO L430 AbstractCegarLoop]: === Iteration 183 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:31,525 INFO L82 PathProgramCache]: Analyzing trace with hash 846599350, now seen corresponding path program 183 times [2021-06-05 14:58:31,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:31,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828394842] [2021-06-05 14:58:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:31,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:31,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828394842] [2021-06-05 14:58:31,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828394842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:31,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:31,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:31,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049478504] [2021-06-05 14:58:31,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:31,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:31,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:31,730 INFO L87 Difference]: Start difference. First operand 8168 states and 28954 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:35,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:35,796 INFO L93 Difference]: Finished difference Result 11561 states and 40520 transitions. [2021-06-05 14:58:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-06-05 14:58:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:35,816 INFO L225 Difference]: With dead ends: 11561 [2021-06-05 14:58:35,816 INFO L226 Difference]: Without dead ends: 11416 [2021-06-05 14:58:35,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4113 ImplicationChecksByTransitivity, 2411.8ms TimeCoverageRelationStatistics Valid=936, Invalid=11274, Unknown=0, NotChecked=0, Total=12210 [2021-06-05 14:58:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2021-06-05 14:58:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 8168. [2021-06-05 14:58:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8168 states, 8167 states have (on average 3.5445083874127588) internal successors, (28948), 8167 states have internal predecessors, (28948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 28948 transitions. [2021-06-05 14:58:35,960 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 28948 transitions. Word has length 47 [2021-06-05 14:58:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:35,960 INFO L482 AbstractCegarLoop]: Abstraction has 8168 states and 28948 transitions. [2021-06-05 14:58:35,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 28948 transitions. [2021-06-05 14:58:35,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:35,971 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:35,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:35,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 14:58:35,972 INFO L430 AbstractCegarLoop]: === Iteration 184 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:35,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1746495128, now seen corresponding path program 184 times [2021-06-05 14:58:35,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:35,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010972723] [2021-06-05 14:58:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:36,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:36,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010972723] [2021-06-05 14:58:36,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010972723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:36,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:36,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:36,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514700457] [2021-06-05 14:58:36,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:36,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:36,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:36,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:36,227 INFO L87 Difference]: Start difference. First operand 8168 states and 28948 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:43,027 INFO L93 Difference]: Finished difference Result 17145 states and 60671 transitions. [2021-06-05 14:58:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-06-05 14:58:43,028 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:43,058 INFO L225 Difference]: With dead ends: 17145 [2021-06-05 14:58:43,058 INFO L226 Difference]: Without dead ends: 16701 [2021-06-05 14:58:43,060 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9514 ImplicationChecksByTransitivity, 4250.8ms TimeCoverageRelationStatistics Valid=1677, Invalid=23445, Unknown=0, NotChecked=0, Total=25122 [2021-06-05 14:58:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16701 states. [2021-06-05 14:58:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16701 to 8664. [2021-06-05 14:58:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 8663 states have (on average 3.558582477201893) internal successors, (30828), 8663 states have internal predecessors, (30828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 30828 transitions. [2021-06-05 14:58:43,244 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 30828 transitions. Word has length 47 [2021-06-05 14:58:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:43,244 INFO L482 AbstractCegarLoop]: Abstraction has 8664 states and 30828 transitions. [2021-06-05 14:58:43,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 30828 transitions. [2021-06-05 14:58:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:43,256 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:43,256 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:43,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 14:58:43,256 INFO L430 AbstractCegarLoop]: === Iteration 185 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:43,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:43,256 INFO L82 PathProgramCache]: Analyzing trace with hash 895843220, now seen corresponding path program 185 times [2021-06-05 14:58:43,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:43,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476613364] [2021-06-05 14:58:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:43,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:43,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476613364] [2021-06-05 14:58:43,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476613364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:43,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:43,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:43,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007113955] [2021-06-05 14:58:43,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:43,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:43,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:43,527 INFO L87 Difference]: Start difference. First operand 8664 states and 30828 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:49,978 INFO L93 Difference]: Finished difference Result 16952 states and 60088 transitions. [2021-06-05 14:58:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2021-06-05 14:58:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:50,010 INFO L225 Difference]: With dead ends: 16952 [2021-06-05 14:58:50,010 INFO L226 Difference]: Without dead ends: 16744 [2021-06-05 14:58:50,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8466 ImplicationChecksByTransitivity, 3955.0ms TimeCoverageRelationStatistics Valid=1544, Invalid=21106, Unknown=0, NotChecked=0, Total=22650 [2021-06-05 14:58:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2021-06-05 14:58:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 8619. [2021-06-05 14:58:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8619 states, 8618 states have (on average 3.561615223949872) internal successors, (30694), 8618 states have internal predecessors, (30694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 30694 transitions. [2021-06-05 14:58:50,195 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 30694 transitions. Word has length 47 [2021-06-05 14:58:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:50,195 INFO L482 AbstractCegarLoop]: Abstraction has 8619 states and 30694 transitions. [2021-06-05 14:58:50,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 30694 transitions. [2021-06-05 14:58:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:50,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:50,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:50,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 14:58:50,207 INFO L430 AbstractCegarLoop]: === Iteration 186 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1718522630, now seen corresponding path program 186 times [2021-06-05 14:58:50,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:50,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265958368] [2021-06-05 14:58:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:50,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:50,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265958368] [2021-06-05 14:58:50,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265958368] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:50,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:50,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:50,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521039369] [2021-06-05 14:58:50,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:50,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:50,459 INFO L87 Difference]: Start difference. First operand 8619 states and 30694 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:58:55,255 INFO L93 Difference]: Finished difference Result 13187 states and 46449 transitions. [2021-06-05 14:58:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-06-05 14:58:55,256 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:58:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:58:55,279 INFO L225 Difference]: With dead ends: 13187 [2021-06-05 14:58:55,280 INFO L226 Difference]: Without dead ends: 13066 [2021-06-05 14:58:55,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5677 ImplicationChecksByTransitivity, 3094.8ms TimeCoverageRelationStatistics Valid=1222, Invalid=14780, Unknown=0, NotChecked=0, Total=16002 [2021-06-05 14:58:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13066 states. [2021-06-05 14:58:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13066 to 8619. [2021-06-05 14:58:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8619 states, 8618 states have (on average 3.561615223949872) internal successors, (30694), 8618 states have internal predecessors, (30694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8619 states to 8619 states and 30694 transitions. [2021-06-05 14:58:55,438 INFO L78 Accepts]: Start accepts. Automaton has 8619 states and 30694 transitions. Word has length 47 [2021-06-05 14:58:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:58:55,439 INFO L482 AbstractCegarLoop]: Abstraction has 8619 states and 30694 transitions. [2021-06-05 14:58:55,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:58:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8619 states and 30694 transitions. [2021-06-05 14:58:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:58:55,450 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:58:55,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:58:55,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 14:58:55,450 INFO L430 AbstractCegarLoop]: === Iteration 187 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:58:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:58:55,450 INFO L82 PathProgramCache]: Analyzing trace with hash -147101194, now seen corresponding path program 187 times [2021-06-05 14:58:55,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:58:55,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105512304] [2021-06-05 14:58:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:58:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:58:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:58:55,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:58:55,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105512304] [2021-06-05 14:58:55,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105512304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:58:55,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:58:55,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:58:55,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989452721] [2021-06-05 14:58:55,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:58:55,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:58:55,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:58:55,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:58:55,656 INFO L87 Difference]: Start difference. First operand 8619 states and 30694 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:01,504 INFO L93 Difference]: Finished difference Result 16101 states and 57229 transitions. [2021-06-05 14:59:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-06-05 14:59:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:01,532 INFO L225 Difference]: With dead ends: 16101 [2021-06-05 14:59:01,532 INFO L226 Difference]: Without dead ends: 15857 [2021-06-05 14:59:01,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7709 ImplicationChecksByTransitivity, 3598.6ms TimeCoverageRelationStatistics Valid=1488, Invalid=19392, Unknown=0, NotChecked=0, Total=20880 [2021-06-05 14:59:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15857 states. [2021-06-05 14:59:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15857 to 8790. [2021-06-05 14:59:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8790 states, 8789 states have (on average 3.567300034133576) internal successors, (31353), 8789 states have internal predecessors, (31353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 31353 transitions. [2021-06-05 14:59:01,704 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 31353 transitions. Word has length 47 [2021-06-05 14:59:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:01,704 INFO L482 AbstractCegarLoop]: Abstraction has 8790 states and 31353 transitions. [2021-06-05 14:59:01,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 31353 transitions. [2021-06-05 14:59:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:01,716 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:01,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:01,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 14:59:01,716 INFO L430 AbstractCegarLoop]: === Iteration 188 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash 151790484, now seen corresponding path program 188 times [2021-06-05 14:59:01,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:01,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450892945] [2021-06-05 14:59:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:01,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:01,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450892945] [2021-06-05 14:59:01,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450892945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:01,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:01,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 14:59:01,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193353627] [2021-06-05 14:59:01,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 14:59:01,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:01,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 14:59:01,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 14:59:01,915 INFO L87 Difference]: Start difference. First operand 8790 states and 31353 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:05,678 INFO L93 Difference]: Finished difference Result 13159 states and 46549 transitions. [2021-06-05 14:59:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 14:59:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:05,702 INFO L225 Difference]: With dead ends: 13159 [2021-06-05 14:59:05,703 INFO L226 Difference]: Without dead ends: 13062 [2021-06-05 14:59:05,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3490 ImplicationChecksByTransitivity, 2269.5ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 14:59:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13062 states. [2021-06-05 14:59:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13062 to 8804. [2021-06-05 14:59:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8804 states, 8803 states have (on average 3.564693854367829) internal successors, (31380), 8803 states have internal predecessors, (31380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8804 states to 8804 states and 31380 transitions. [2021-06-05 14:59:05,861 INFO L78 Accepts]: Start accepts. Automaton has 8804 states and 31380 transitions. Word has length 47 [2021-06-05 14:59:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:05,861 INFO L482 AbstractCegarLoop]: Abstraction has 8804 states and 31380 transitions. [2021-06-05 14:59:05,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8804 states and 31380 transitions. [2021-06-05 14:59:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:05,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:05,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:05,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 14:59:05,874 INFO L430 AbstractCegarLoop]: === Iteration 189 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1573630026, now seen corresponding path program 189 times [2021-06-05 14:59:05,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:05,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234286098] [2021-06-05 14:59:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:06,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:06,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234286098] [2021-06-05 14:59:06,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234286098] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:06,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:06,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:06,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070940595] [2021-06-05 14:59:06,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:06,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:06,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:06,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:06,081 INFO L87 Difference]: Start difference. First operand 8804 states and 31380 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:10,170 INFO L93 Difference]: Finished difference Result 13458 states and 47653 transitions. [2021-06-05 14:59:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-06-05 14:59:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:10,195 INFO L225 Difference]: With dead ends: 13458 [2021-06-05 14:59:10,196 INFO L226 Difference]: Without dead ends: 13341 [2021-06-05 14:59:10,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 2504.7ms TimeCoverageRelationStatistics Valid=983, Invalid=11007, Unknown=0, NotChecked=0, Total=11990 [2021-06-05 14:59:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13341 states. [2021-06-05 14:59:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13341 to 8778. [2021-06-05 14:59:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8778 states, 8777 states have (on average 3.567847783980859) internal successors, (31315), 8777 states have internal predecessors, (31315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8778 states to 8778 states and 31315 transitions. [2021-06-05 14:59:10,357 INFO L78 Accepts]: Start accepts. Automaton has 8778 states and 31315 transitions. Word has length 47 [2021-06-05 14:59:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:10,357 INFO L482 AbstractCegarLoop]: Abstraction has 8778 states and 31315 transitions. [2021-06-05 14:59:10,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8778 states and 31315 transitions. [2021-06-05 14:59:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:10,369 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:10,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:10,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 14:59:10,369 INFO L430 AbstractCegarLoop]: === Iteration 190 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1066695164, now seen corresponding path program 190 times [2021-06-05 14:59:10,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:10,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434535356] [2021-06-05 14:59:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:10,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:10,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434535356] [2021-06-05 14:59:10,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434535356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:10,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:10,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:10,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535487909] [2021-06-05 14:59:10,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:10,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:10,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:10,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:10,612 INFO L87 Difference]: Start difference. First operand 8778 states and 31315 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:13,640 INFO L93 Difference]: Finished difference Result 13381 states and 47217 transitions. [2021-06-05 14:59:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 14:59:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:13,668 INFO L225 Difference]: With dead ends: 13381 [2021-06-05 14:59:13,668 INFO L226 Difference]: Without dead ends: 13254 [2021-06-05 14:59:13,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 1667.8ms TimeCoverageRelationStatistics Valid=572, Invalid=6400, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 14:59:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2021-06-05 14:59:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 8810. [2021-06-05 14:59:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8810 states, 8809 states have (on average 3.5655579520944487) internal successors, (31409), 8809 states have internal predecessors, (31409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 31409 transitions. [2021-06-05 14:59:13,889 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 31409 transitions. Word has length 47 [2021-06-05 14:59:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:13,889 INFO L482 AbstractCegarLoop]: Abstraction has 8810 states and 31409 transitions. [2021-06-05 14:59:13,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 31409 transitions. [2021-06-05 14:59:13,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:13,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:13,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:13,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 14:59:13,901 INFO L430 AbstractCegarLoop]: === Iteration 191 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash -304502242, now seen corresponding path program 191 times [2021-06-05 14:59:13,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:13,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828734090] [2021-06-05 14:59:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:14,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:14,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828734090] [2021-06-05 14:59:14,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828734090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:14,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:14,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:14,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426598465] [2021-06-05 14:59:14,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:14,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:14,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:14,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:14,109 INFO L87 Difference]: Start difference. First operand 8810 states and 31409 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:16,949 INFO L93 Difference]: Finished difference Result 13062 states and 46105 transitions. [2021-06-05 14:59:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 14:59:16,949 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:16,973 INFO L225 Difference]: With dead ends: 13062 [2021-06-05 14:59:16,973 INFO L226 Difference]: Without dead ends: 12962 [2021-06-05 14:59:16,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1603.2ms TimeCoverageRelationStatistics Valid=557, Invalid=5923, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 14:59:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2021-06-05 14:59:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 8837. [2021-06-05 14:59:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 3.562132186509733) internal successors, (31475), 8836 states have internal predecessors, (31475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 31475 transitions. [2021-06-05 14:59:17,133 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 31475 transitions. Word has length 47 [2021-06-05 14:59:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:17,134 INFO L482 AbstractCegarLoop]: Abstraction has 8837 states and 31475 transitions. [2021-06-05 14:59:17,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 31475 transitions. [2021-06-05 14:59:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:17,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:17,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:17,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 14:59:17,146 INFO L430 AbstractCegarLoop]: === Iteration 192 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1739569732, now seen corresponding path program 192 times [2021-06-05 14:59:17,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:17,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301325082] [2021-06-05 14:59:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:17,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:17,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301325082] [2021-06-05 14:59:17,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301325082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:17,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:17,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:17,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301279179] [2021-06-05 14:59:17,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:17,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:17,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:17,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:17,353 INFO L87 Difference]: Start difference. First operand 8837 states and 31475 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:20,543 INFO L93 Difference]: Finished difference Result 13918 states and 49230 transitions. [2021-06-05 14:59:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-06-05 14:59:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:20,570 INFO L225 Difference]: With dead ends: 13918 [2021-06-05 14:59:20,570 INFO L226 Difference]: Without dead ends: 13800 [2021-06-05 14:59:20,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 1805.8ms TimeCoverageRelationStatistics Valid=652, Invalid=7538, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 14:59:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2021-06-05 14:59:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8810. [2021-06-05 14:59:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8810 states, 8809 states have (on average 3.565103871040981) internal successors, (31405), 8809 states have internal predecessors, (31405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 31405 transitions. [2021-06-05 14:59:20,738 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 31405 transitions. Word has length 47 [2021-06-05 14:59:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:20,738 INFO L482 AbstractCegarLoop]: Abstraction has 8810 states and 31405 transitions. [2021-06-05 14:59:20,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 31405 transitions. [2021-06-05 14:59:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:20,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:20,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:20,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 14:59:20,751 INFO L430 AbstractCegarLoop]: === Iteration 193 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:20,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash -614209124, now seen corresponding path program 193 times [2021-06-05 14:59:20,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:20,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016533556] [2021-06-05 14:59:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:20,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:20,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016533556] [2021-06-05 14:59:20,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016533556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:20,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:20,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:20,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26218837] [2021-06-05 14:59:20,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:20,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:20,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:20,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:20,961 INFO L87 Difference]: Start difference. First operand 8810 states and 31405 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:24,341 INFO L93 Difference]: Finished difference Result 13889 states and 49051 transitions. [2021-06-05 14:59:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-06-05 14:59:24,341 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:24,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:24,368 INFO L225 Difference]: With dead ends: 13889 [2021-06-05 14:59:24,368 INFO L226 Difference]: Without dead ends: 13800 [2021-06-05 14:59:24,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2744 ImplicationChecksByTransitivity, 2031.0ms TimeCoverageRelationStatistics Valid=704, Invalid=8038, Unknown=0, NotChecked=0, Total=8742 [2021-06-05 14:59:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13800 states. [2021-06-05 14:59:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13800 to 8818. [2021-06-05 14:59:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8818 states, 8817 states have (on average 3.564137461721674) internal successors, (31425), 8817 states have internal predecessors, (31425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8818 states to 8818 states and 31425 transitions. [2021-06-05 14:59:24,547 INFO L78 Accepts]: Start accepts. Automaton has 8818 states and 31425 transitions. Word has length 47 [2021-06-05 14:59:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:24,547 INFO L482 AbstractCegarLoop]: Abstraction has 8818 states and 31425 transitions. [2021-06-05 14:59:24,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8818 states and 31425 transitions. [2021-06-05 14:59:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:24,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:24,560 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:24,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 14:59:24,560 INFO L430 AbstractCegarLoop]: === Iteration 194 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1136141924, now seen corresponding path program 194 times [2021-06-05 14:59:24,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:24,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54417599] [2021-06-05 14:59:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:24,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:24,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54417599] [2021-06-05 14:59:24,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54417599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:24,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:24,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:24,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575458969] [2021-06-05 14:59:24,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:24,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:24,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:24,770 INFO L87 Difference]: Start difference. First operand 8818 states and 31425 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:27,613 INFO L93 Difference]: Finished difference Result 13367 states and 47168 transitions. [2021-06-05 14:59:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 14:59:27,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:27,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:27,638 INFO L225 Difference]: With dead ends: 13367 [2021-06-05 14:59:27,638 INFO L226 Difference]: Without dead ends: 13261 [2021-06-05 14:59:27,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 1702.9ms TimeCoverageRelationStatistics Valid=584, Invalid=5896, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 14:59:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2021-06-05 14:59:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 8812. [2021-06-05 14:59:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8812 states, 8811 states have (on average 3.564635115196913) internal successors, (31408), 8811 states have internal predecessors, (31408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 31408 transitions. [2021-06-05 14:59:27,801 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 31408 transitions. Word has length 47 [2021-06-05 14:59:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:27,801 INFO L482 AbstractCegarLoop]: Abstraction has 8812 states and 31408 transitions. [2021-06-05 14:59:27,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 31408 transitions. [2021-06-05 14:59:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:27,813 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:27,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:27,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 14:59:27,813 INFO L430 AbstractCegarLoop]: === Iteration 195 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:27,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1064028982, now seen corresponding path program 195 times [2021-06-05 14:59:27,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:27,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830136822] [2021-06-05 14:59:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:28,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:28,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830136822] [2021-06-05 14:59:28,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830136822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:28,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:28,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:28,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077762116] [2021-06-05 14:59:28,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:28,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:28,040 INFO L87 Difference]: Start difference. First operand 8812 states and 31408 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:31,017 INFO L93 Difference]: Finished difference Result 13612 states and 48120 transitions. [2021-06-05 14:59:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 14:59:31,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:31,041 INFO L225 Difference]: With dead ends: 13612 [2021-06-05 14:59:31,042 INFO L226 Difference]: Without dead ends: 13512 [2021-06-05 14:59:31,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1814.2ms TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 14:59:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2021-06-05 14:59:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 8821. [2021-06-05 14:59:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 3.5634920634920637) internal successors, (31430), 8820 states have internal predecessors, (31430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 31430 transitions. [2021-06-05 14:59:31,202 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 31430 transitions. Word has length 47 [2021-06-05 14:59:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:31,202 INFO L482 AbstractCegarLoop]: Abstraction has 8821 states and 31430 transitions. [2021-06-05 14:59:31,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 31430 transitions. [2021-06-05 14:59:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:31,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:31,214 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:31,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 14:59:31,214 INFO L430 AbstractCegarLoop]: === Iteration 196 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash 997966424, now seen corresponding path program 196 times [2021-06-05 14:59:31,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:31,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8432920] [2021-06-05 14:59:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:31,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:31,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8432920] [2021-06-05 14:59:31,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8432920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:31,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:31,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:31,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840457802] [2021-06-05 14:59:31,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:31,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:31,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:31,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:31,417 INFO L87 Difference]: Start difference. First operand 8821 states and 31430 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:34,761 INFO L93 Difference]: Finished difference Result 14468 states and 51245 transitions. [2021-06-05 14:59:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-05 14:59:34,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:34,790 INFO L225 Difference]: With dead ends: 14468 [2021-06-05 14:59:34,790 INFO L226 Difference]: Without dead ends: 14362 [2021-06-05 14:59:34,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 1970.2ms TimeCoverageRelationStatistics Valid=724, Invalid=8396, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 14:59:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14362 states. [2021-06-05 14:59:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14362 to 8806. [2021-06-05 14:59:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 8805 states have (on average 3.565587734241908) internal successors, (31395), 8805 states have internal predecessors, (31395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 31395 transitions. [2021-06-05 14:59:34,960 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 31395 transitions. Word has length 47 [2021-06-05 14:59:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:34,960 INFO L482 AbstractCegarLoop]: Abstraction has 8806 states and 31395 transitions. [2021-06-05 14:59:34,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 31395 transitions. [2021-06-05 14:59:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:34,972 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:34,972 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:34,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 14:59:34,972 INFO L430 AbstractCegarLoop]: === Iteration 197 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2094935804, now seen corresponding path program 197 times [2021-06-05 14:59:34,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:34,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873481888] [2021-06-05 14:59:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:35,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:35,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873481888] [2021-06-05 14:59:35,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873481888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:35,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:35,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:35,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687740712] [2021-06-05 14:59:35,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:35,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:35,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:35,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:35,173 INFO L87 Difference]: Start difference. First operand 8806 states and 31395 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:38,090 INFO L93 Difference]: Finished difference Result 12311 states and 43489 transitions. [2021-06-05 14:59:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 14:59:38,091 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:38,113 INFO L225 Difference]: With dead ends: 12311 [2021-06-05 14:59:38,113 INFO L226 Difference]: Without dead ends: 12184 [2021-06-05 14:59:38,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1624.2ms TimeCoverageRelationStatistics Valid=586, Invalid=6386, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 14:59:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2021-06-05 14:59:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 8828. [2021-06-05 14:59:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8828 states, 8827 states have (on average 3.563951512405121) internal successors, (31459), 8827 states have internal predecessors, (31459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31459 transitions. [2021-06-05 14:59:38,276 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31459 transitions. Word has length 47 [2021-06-05 14:59:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:38,276 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31459 transitions. [2021-06-05 14:59:38,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31459 transitions. [2021-06-05 14:59:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:38,288 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:38,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:38,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 14:59:38,288 INFO L430 AbstractCegarLoop]: === Iteration 198 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:38,288 INFO L82 PathProgramCache]: Analyzing trace with hash -372660232, now seen corresponding path program 198 times [2021-06-05 14:59:38,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:38,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280670169] [2021-06-05 14:59:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:38,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:38,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280670169] [2021-06-05 14:59:38,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280670169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:38,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:38,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:38,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295683522] [2021-06-05 14:59:38,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:38,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:38,632 INFO L87 Difference]: Start difference. First operand 8828 states and 31459 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:41,422 INFO L93 Difference]: Finished difference Result 11360 states and 40284 transitions. [2021-06-05 14:59:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 14:59:41,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:41,442 INFO L225 Difference]: With dead ends: 11360 [2021-06-05 14:59:41,443 INFO L226 Difference]: Without dead ends: 11263 [2021-06-05 14:59:41,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1803.0ms TimeCoverageRelationStatistics Valid=585, Invalid=6387, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 14:59:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2021-06-05 14:59:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 8846. [2021-06-05 14:59:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8846 states, 8845 states have (on average 3.5617863199547766) internal successors, (31504), 8845 states have internal predecessors, (31504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 31504 transitions. [2021-06-05 14:59:41,592 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 31504 transitions. Word has length 47 [2021-06-05 14:59:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:41,592 INFO L482 AbstractCegarLoop]: Abstraction has 8846 states and 31504 transitions. [2021-06-05 14:59:41,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 31504 transitions. [2021-06-05 14:59:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:41,604 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:41,604 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:41,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 14:59:41,605 INFO L430 AbstractCegarLoop]: === Iteration 199 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash -369986406, now seen corresponding path program 199 times [2021-06-05 14:59:41,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:41,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83724737] [2021-06-05 14:59:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:41,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:41,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83724737] [2021-06-05 14:59:41,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83724737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:41,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:41,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:41,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605628084] [2021-06-05 14:59:41,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:41,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:41,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:41,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:41,808 INFO L87 Difference]: Start difference. First operand 8846 states and 31504 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:44,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:44,831 INFO L93 Difference]: Finished difference Result 12189 states and 43128 transitions. [2021-06-05 14:59:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 14:59:44,832 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:44,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:44,854 INFO L225 Difference]: With dead ends: 12189 [2021-06-05 14:59:44,854 INFO L226 Difference]: Without dead ends: 12080 [2021-06-05 14:59:44,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 1777.9ms TimeCoverageRelationStatistics Valid=648, Invalid=7184, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 14:59:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2021-06-05 14:59:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 8828. [2021-06-05 14:59:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8828 states, 8827 states have (on average 3.5634983573127905) internal successors, (31455), 8827 states have internal predecessors, (31455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31455 transitions. [2021-06-05 14:59:45,023 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31455 transitions. Word has length 47 [2021-06-05 14:59:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:45,023 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31455 transitions. [2021-06-05 14:59:45,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31455 transitions. [2021-06-05 14:59:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:45,036 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:45,036 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:45,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 14:59:45,037 INFO L430 AbstractCegarLoop]: === Iteration 200 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:45,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1110963812, now seen corresponding path program 200 times [2021-06-05 14:59:45,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:45,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562651408] [2021-06-05 14:59:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:45,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:45,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562651408] [2021-06-05 14:59:45,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562651408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:45,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:45,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:45,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847855078] [2021-06-05 14:59:45,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:45,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:45,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:45,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:45,248 INFO L87 Difference]: Start difference. First operand 8828 states and 31455 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:50,124 INFO L93 Difference]: Finished difference Result 13768 states and 48693 transitions. [2021-06-05 14:59:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-06-05 14:59:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:50,151 INFO L225 Difference]: With dead ends: 13768 [2021-06-05 14:59:50,151 INFO L226 Difference]: Without dead ends: 13647 [2021-06-05 14:59:50,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5965 ImplicationChecksByTransitivity, 3123.7ms TimeCoverageRelationStatistics Valid=1266, Invalid=15504, Unknown=0, NotChecked=0, Total=16770 [2021-06-05 14:59:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13647 states. [2021-06-05 14:59:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13647 to 8828. [2021-06-05 14:59:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8828 states, 8827 states have (on average 3.5634983573127905) internal successors, (31455), 8827 states have internal predecessors, (31455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8828 states to 8828 states and 31455 transitions. [2021-06-05 14:59:50,324 INFO L78 Accepts]: Start accepts. Automaton has 8828 states and 31455 transitions. Word has length 47 [2021-06-05 14:59:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:50,324 INFO L482 AbstractCegarLoop]: Abstraction has 8828 states and 31455 transitions. [2021-06-05 14:59:50,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8828 states and 31455 transitions. [2021-06-05 14:59:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:50,337 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:50,337 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:50,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 14:59:50,337 INFO L430 AbstractCegarLoop]: === Iteration 201 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash 460457624, now seen corresponding path program 201 times [2021-06-05 14:59:50,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:50,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114519170] [2021-06-05 14:59:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:50,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:50,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114519170] [2021-06-05 14:59:50,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114519170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:50,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:50,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:50,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305175777] [2021-06-05 14:59:50,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:50,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:50,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:50,545 INFO L87 Difference]: Start difference. First operand 8828 states and 31455 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:59:56,612 INFO L93 Difference]: Finished difference Result 16125 states and 57332 transitions. [2021-06-05 14:59:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-06-05 14:59:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 14:59:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:59:56,641 INFO L225 Difference]: With dead ends: 16125 [2021-06-05 14:59:56,641 INFO L226 Difference]: Without dead ends: 15933 [2021-06-05 14:59:56,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8957 ImplicationChecksByTransitivity, 3792.9ms TimeCoverageRelationStatistics Valid=1602, Invalid=22268, Unknown=0, NotChecked=0, Total=23870 [2021-06-05 14:59:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15933 states. [2021-06-05 14:59:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15933 to 8837. [2021-06-05 14:59:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8837 states, 8836 states have (on average 3.5639429606156634) internal successors, (31491), 8836 states have internal predecessors, (31491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 31491 transitions. [2021-06-05 14:59:56,819 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 31491 transitions. Word has length 47 [2021-06-05 14:59:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:59:56,819 INFO L482 AbstractCegarLoop]: Abstraction has 8837 states and 31491 transitions. [2021-06-05 14:59:56,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:59:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 31491 transitions. [2021-06-05 14:59:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 14:59:56,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:59:56,834 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:59:56,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 14:59:56,835 INFO L430 AbstractCegarLoop]: === Iteration 202 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 14:59:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:59:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash 759349302, now seen corresponding path program 202 times [2021-06-05 14:59:56,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:59:56,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189185031] [2021-06-05 14:59:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:59:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:59:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:59:57,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:59:57,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189185031] [2021-06-05 14:59:57,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189185031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:59:57,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:59:57,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 14:59:57,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282822328] [2021-06-05 14:59:57,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 14:59:57,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:59:57,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 14:59:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 14:59:57,040 INFO L87 Difference]: Start difference. First operand 8837 states and 31491 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:00,829 INFO L93 Difference]: Finished difference Result 12966 states and 45709 transitions. [2021-06-05 15:00:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-06-05 15:00:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:00,853 INFO L225 Difference]: With dead ends: 12966 [2021-06-05 15:00:00,853 INFO L226 Difference]: Without dead ends: 12869 [2021-06-05 15:00:00,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3663 ImplicationChecksByTransitivity, 2340.6ms TimeCoverageRelationStatistics Valid=847, Invalid=10283, Unknown=0, NotChecked=0, Total=11130 [2021-06-05 15:00:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12869 states. [2021-06-05 15:00:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12869 to 8845. [2021-06-05 15:00:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8845 states, 8844 states have (on average 3.5627544097693353) internal successors, (31509), 8844 states have internal predecessors, (31509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 31509 transitions. [2021-06-05 15:00:01,010 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 31509 transitions. Word has length 47 [2021-06-05 15:00:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:01,011 INFO L482 AbstractCegarLoop]: Abstraction has 8845 states and 31509 transitions. [2021-06-05 15:00:01,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 31509 transitions. [2021-06-05 15:00:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:01,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:01,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:01,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 15:00:01,023 INFO L430 AbstractCegarLoop]: === Iteration 203 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:01,023 INFO L82 PathProgramCache]: Analyzing trace with hash -966071208, now seen corresponding path program 203 times [2021-06-05 15:00:01,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:01,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815498886] [2021-06-05 15:00:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:01,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:01,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815498886] [2021-06-05 15:00:01,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815498886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:01,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:01,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:01,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854560464] [2021-06-05 15:00:01,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:01,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:01,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:01,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:01,250 INFO L87 Difference]: Start difference. First operand 8845 states and 31509 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:05,483 INFO L93 Difference]: Finished difference Result 13193 states and 46752 transitions. [2021-06-05 15:00:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-06-05 15:00:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:05,508 INFO L225 Difference]: With dead ends: 13193 [2021-06-05 15:00:05,508 INFO L226 Difference]: Without dead ends: 13090 [2021-06-05 15:00:05,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4591 ImplicationChecksByTransitivity, 2713.1ms TimeCoverageRelationStatistics Valid=1091, Invalid=12481, Unknown=0, NotChecked=0, Total=13572 [2021-06-05 15:00:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2021-06-05 15:00:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 8833. [2021-06-05 15:00:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 8832 states have (on average 3.564651268115942) internal successors, (31483), 8832 states have internal predecessors, (31483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 31483 transitions. [2021-06-05 15:00:05,682 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 31483 transitions. Word has length 47 [2021-06-05 15:00:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:05,682 INFO L482 AbstractCegarLoop]: Abstraction has 8833 states and 31483 transitions. [2021-06-05 15:00:05,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 31483 transitions. [2021-06-05 15:00:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:05,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:05,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:05,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 15:00:05,696 INFO L430 AbstractCegarLoop]: === Iteration 204 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:05,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash -279872324, now seen corresponding path program 204 times [2021-06-05 15:00:05,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:05,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021055454] [2021-06-05 15:00:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:05,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:05,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021055454] [2021-06-05 15:00:05,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021055454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:05,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:05,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:05,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951190698] [2021-06-05 15:00:05,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:05,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:05,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:05,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:05,940 INFO L87 Difference]: Start difference. First operand 8833 states and 31483 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:09,049 INFO L93 Difference]: Finished difference Result 12744 states and 45096 transitions. [2021-06-05 15:00:09,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 15:00:09,050 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:09,074 INFO L225 Difference]: With dead ends: 12744 [2021-06-05 15:00:09,074 INFO L226 Difference]: Without dead ends: 12644 [2021-06-05 15:00:09,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 1727.2ms TimeCoverageRelationStatistics Valid=534, Invalid=5786, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 15:00:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12644 states. [2021-06-05 15:00:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12644 to 8842. [2021-06-05 15:00:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8841 states have (on average 3.563510915054858) internal successors, (31505), 8841 states have internal predecessors, (31505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31505 transitions. [2021-06-05 15:00:09,239 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31505 transitions. Word has length 47 [2021-06-05 15:00:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:09,239 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31505 transitions. [2021-06-05 15:00:09,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31505 transitions. [2021-06-05 15:00:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:09,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:09,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:09,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 15:00:09,252 INFO L430 AbstractCegarLoop]: === Iteration 205 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:09,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:09,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1714939814, now seen corresponding path program 205 times [2021-06-05 15:00:09,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:09,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754348743] [2021-06-05 15:00:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:09,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:09,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754348743] [2021-06-05 15:00:09,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754348743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:09,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:09,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:09,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243869813] [2021-06-05 15:00:09,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:09,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:09,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:09,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:09,464 INFO L87 Difference]: Start difference. First operand 8842 states and 31505 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:12,051 INFO L93 Difference]: Finished difference Result 11532 states and 40861 transitions. [2021-06-05 15:00:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 15:00:12,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:12,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:12,071 INFO L225 Difference]: With dead ends: 11532 [2021-06-05 15:00:12,071 INFO L226 Difference]: Without dead ends: 11414 [2021-06-05 15:00:12,072 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 1437.9ms TimeCoverageRelationStatistics Valid=482, Invalid=5068, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 15:00:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2021-06-05 15:00:12,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 8842. [2021-06-05 15:00:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8841 states have (on average 3.5628322587942542) internal successors, (31499), 8841 states have internal predecessors, (31499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31499 transitions. [2021-06-05 15:00:12,219 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31499 transitions. Word has length 47 [2021-06-05 15:00:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:12,219 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31499 transitions. [2021-06-05 15:00:12,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31499 transitions. [2021-06-05 15:00:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:12,232 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:12,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:12,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 15:00:12,232 INFO L430 AbstractCegarLoop]: === Iteration 206 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 771909014, now seen corresponding path program 206 times [2021-06-05 15:00:12,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:12,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350291386] [2021-06-05 15:00:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:12,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:12,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350291386] [2021-06-05 15:00:12,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350291386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:12,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:12,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:12,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587733392] [2021-06-05 15:00:12,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:12,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:12,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:12,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:12,441 INFO L87 Difference]: Start difference. First operand 8842 states and 31499 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:15,271 INFO L93 Difference]: Finished difference Result 11390 states and 40435 transitions. [2021-06-05 15:00:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 15:00:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:15,292 INFO L225 Difference]: With dead ends: 11390 [2021-06-05 15:00:15,292 INFO L226 Difference]: Without dead ends: 11293 [2021-06-05 15:00:15,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1619.5ms TimeCoverageRelationStatistics Valid=543, Invalid=5937, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 15:00:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11293 states. [2021-06-05 15:00:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11293 to 8848. [2021-06-05 15:00:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8848 states, 8847 states have (on average 3.5621114502091102) internal successors, (31514), 8847 states have internal predecessors, (31514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 31514 transitions. [2021-06-05 15:00:15,445 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 31514 transitions. Word has length 47 [2021-06-05 15:00:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:15,445 INFO L482 AbstractCegarLoop]: Abstraction has 8848 states and 31514 transitions. [2021-06-05 15:00:15,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 31514 transitions. [2021-06-05 15:00:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:15,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:15,457 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:15,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 15:00:15,457 INFO L430 AbstractCegarLoop]: === Iteration 207 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:15,458 INFO L82 PathProgramCache]: Analyzing trace with hash 774582840, now seen corresponding path program 207 times [2021-06-05 15:00:15,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:15,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040970014] [2021-06-05 15:00:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:15,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:15,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040970014] [2021-06-05 15:00:15,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040970014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:15,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:15,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:15,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177599415] [2021-06-05 15:00:15,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:15,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:15,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:15,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:15,663 INFO L87 Difference]: Start difference. First operand 8848 states and 31514 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:18,031 INFO L93 Difference]: Finished difference Result 10683 states and 37856 transitions. [2021-06-05 15:00:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 15:00:18,032 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:18,051 INFO L225 Difference]: With dead ends: 10683 [2021-06-05 15:00:18,051 INFO L226 Difference]: Without dead ends: 10574 [2021-06-05 15:00:18,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 1369.9ms TimeCoverageRelationStatistics Valid=456, Invalid=4514, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 15:00:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2021-06-05 15:00:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 8830. [2021-06-05 15:00:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8830 states, 8829 states have (on average 3.563597236380111) internal successors, (31463), 8829 states have internal predecessors, (31463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8830 states to 8830 states and 31463 transitions. [2021-06-05 15:00:18,195 INFO L78 Accepts]: Start accepts. Automaton has 8830 states and 31463 transitions. Word has length 47 [2021-06-05 15:00:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:18,195 INFO L482 AbstractCegarLoop]: Abstraction has 8830 states and 31463 transitions. [2021-06-05 15:00:18,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 8830 states and 31463 transitions. [2021-06-05 15:00:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:18,208 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:18,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:18,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 15:00:18,208 INFO L430 AbstractCegarLoop]: === Iteration 208 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash -482580522, now seen corresponding path program 208 times [2021-06-05 15:00:18,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:18,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047109135] [2021-06-05 15:00:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:18,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:18,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047109135] [2021-06-05 15:00:18,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047109135] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:18,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:18,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 15:00:18,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765023802] [2021-06-05 15:00:18,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 15:00:18,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:18,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 15:00:18,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 15:00:18,405 INFO L87 Difference]: Start difference. First operand 8830 states and 31463 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:21,197 INFO L93 Difference]: Finished difference Result 12830 states and 45389 transitions. [2021-06-05 15:00:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 15:00:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:21,223 INFO L225 Difference]: With dead ends: 12830 [2021-06-05 15:00:21,223 INFO L226 Difference]: Without dead ends: 12730 [2021-06-05 15:00:21,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 1519.0ms TimeCoverageRelationStatistics Valid=506, Invalid=5194, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 15:00:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12730 states. [2021-06-05 15:00:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12730 to 8833. [2021-06-05 15:00:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 8832 states have (on average 3.5637454710144927) internal successors, (31475), 8832 states have internal predecessors, (31475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 31475 transitions. [2021-06-05 15:00:21,449 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 31475 transitions. Word has length 47 [2021-06-05 15:00:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:21,449 INFO L482 AbstractCegarLoop]: Abstraction has 8833 states and 31475 transitions. [2021-06-05 15:00:21,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 31475 transitions. [2021-06-05 15:00:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:21,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:21,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:21,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 15:00:21,462 INFO L430 AbstractCegarLoop]: === Iteration 209 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1892548664, now seen corresponding path program 209 times [2021-06-05 15:00:21,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:21,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352150080] [2021-06-05 15:00:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:21,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:21,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352150080] [2021-06-05 15:00:21,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352150080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:21,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:21,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 15:00:21,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069068258] [2021-06-05 15:00:21,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 15:00:21,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:21,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 15:00:21,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 15:00:21,659 INFO L87 Difference]: Start difference. First operand 8833 states and 31475 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:24,414 INFO L93 Difference]: Finished difference Result 11794 states and 41896 transitions. [2021-06-05 15:00:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-05 15:00:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:24,436 INFO L225 Difference]: With dead ends: 11794 [2021-06-05 15:00:24,436 INFO L226 Difference]: Without dead ends: 11688 [2021-06-05 15:00:24,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1536.1ms TimeCoverageRelationStatistics Valid=528, Invalid=5634, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 15:00:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2021-06-05 15:00:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 8836. [2021-06-05 15:00:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 8835 states have (on average 3.563554046406338) internal successors, (31484), 8835 states have internal predecessors, (31484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31484 transitions. [2021-06-05 15:00:24,593 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31484 transitions. Word has length 47 [2021-06-05 15:00:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:24,593 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31484 transitions. [2021-06-05 15:00:24,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31484 transitions. [2021-06-05 15:00:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:24,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:24,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:24,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 15:00:24,606 INFO L430 AbstractCegarLoop]: === Iteration 210 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:24,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2086966264, now seen corresponding path program 210 times [2021-06-05 15:00:24,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:24,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414873194] [2021-06-05 15:00:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:24,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:24,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414873194] [2021-06-05 15:00:24,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414873194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:24,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:24,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:24,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850009630] [2021-06-05 15:00:24,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:24,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:24,813 INFO L87 Difference]: Start difference. First operand 8836 states and 31484 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:27,913 INFO L93 Difference]: Finished difference Result 13289 states and 47160 transitions. [2021-06-05 15:00:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 15:00:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:27,940 INFO L225 Difference]: With dead ends: 13289 [2021-06-05 15:00:27,940 INFO L226 Difference]: Without dead ends: 13189 [2021-06-05 15:00:27,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 1691.4ms TimeCoverageRelationStatistics Valid=555, Invalid=6087, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 15:00:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2021-06-05 15:00:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 8836. [2021-06-05 15:00:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 8835 states have (on average 3.563554046406338) internal successors, (31484), 8835 states have internal predecessors, (31484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:28,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31484 transitions. [2021-06-05 15:00:28,120 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31484 transitions. Word has length 47 [2021-06-05 15:00:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:28,120 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31484 transitions. [2021-06-05 15:00:28,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31484 transitions. [2021-06-05 15:00:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:28,133 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:28,133 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:28,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 15:00:28,133 INFO L430 AbstractCegarLoop]: === Iteration 211 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:28,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1544083320, now seen corresponding path program 211 times [2021-06-05 15:00:28,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:28,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127089749] [2021-06-05 15:00:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:28,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:28,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127089749] [2021-06-05 15:00:28,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127089749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:28,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:28,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:28,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201828146] [2021-06-05 15:00:28,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:28,341 INFO L87 Difference]: Start difference. First operand 8836 states and 31484 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:31,122 INFO L93 Difference]: Finished difference Result 12138 states and 43268 transitions. [2021-06-05 15:00:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 15:00:31,123 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:31,143 INFO L225 Difference]: With dead ends: 12138 [2021-06-05 15:00:31,143 INFO L226 Difference]: Without dead ends: 12038 [2021-06-05 15:00:31,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1490.6ms TimeCoverageRelationStatistics Valid=511, Invalid=5495, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 15:00:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12038 states. [2021-06-05 15:00:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12038 to 8836. [2021-06-05 15:00:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 8835 states have (on average 3.5632144878324845) internal successors, (31481), 8835 states have internal predecessors, (31481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 31481 transitions. [2021-06-05 15:00:31,287 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 31481 transitions. Word has length 47 [2021-06-05 15:00:31,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:31,288 INFO L482 AbstractCegarLoop]: Abstraction has 8836 states and 31481 transitions. [2021-06-05 15:00:31,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 31481 transitions. [2021-06-05 15:00:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:31,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:31,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:31,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 15:00:31,300 INFO L430 AbstractCegarLoop]: === Iteration 212 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:31,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:31,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1826486106, now seen corresponding path program 212 times [2021-06-05 15:00:31,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:31,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170283182] [2021-06-05 15:00:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:31,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:31,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170283182] [2021-06-05 15:00:31,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170283182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:31,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:31,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:31,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220766221] [2021-06-05 15:00:31,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:31,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:31,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:31,517 INFO L87 Difference]: Start difference. First operand 8836 states and 31481 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:34,592 INFO L93 Difference]: Finished difference Result 12247 states and 43654 transitions. [2021-06-05 15:00:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 15:00:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:34,615 INFO L225 Difference]: With dead ends: 12247 [2021-06-05 15:00:34,615 INFO L226 Difference]: Without dead ends: 12150 [2021-06-05 15:00:34,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 1738.9ms TimeCoverageRelationStatistics Valid=577, Invalid=6563, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 15:00:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2021-06-05 15:00:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 8842. [2021-06-05 15:00:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8841 states have (on average 3.562492930663952) internal successors, (31496), 8841 states have internal predecessors, (31496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 31496 transitions. [2021-06-05 15:00:34,771 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 31496 transitions. Word has length 47 [2021-06-05 15:00:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:34,771 INFO L482 AbstractCegarLoop]: Abstraction has 8842 states and 31496 transitions. [2021-06-05 15:00:34,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 31496 transitions. [2021-06-05 15:00:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:34,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:34,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:34,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 15:00:34,785 INFO L430 AbstractCegarLoop]: === Iteration 213 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1909374712, now seen corresponding path program 213 times [2021-06-05 15:00:34,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:34,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82588833] [2021-06-05 15:00:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:34,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:34,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82588833] [2021-06-05 15:00:34,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82588833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:34,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:34,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:34,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449374660] [2021-06-05 15:00:34,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:34,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:34,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:34,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:34,989 INFO L87 Difference]: Start difference. First operand 8842 states and 31496 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:37,579 INFO L93 Difference]: Finished difference Result 11540 states and 41075 transitions. [2021-06-05 15:00:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 15:00:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:37,601 INFO L225 Difference]: With dead ends: 11540 [2021-06-05 15:00:37,601 INFO L226 Difference]: Without dead ends: 11434 [2021-06-05 15:00:37,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1384.4ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 15:00:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2021-06-05 15:00:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 8827. [2021-06-05 15:00:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8827 states, 8826 states have (on average 3.5645819170632222) internal successors, (31461), 8826 states have internal predecessors, (31461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 31461 transitions. [2021-06-05 15:00:37,760 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 31461 transitions. Word has length 47 [2021-06-05 15:00:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:37,760 INFO L482 AbstractCegarLoop]: Abstraction has 8827 states and 31461 transitions. [2021-06-05 15:00:37,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 31461 transitions. [2021-06-05 15:00:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:37,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:37,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:37,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 15:00:37,773 INFO L430 AbstractCegarLoop]: === Iteration 214 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash -879416932, now seen corresponding path program 214 times [2021-06-05 15:00:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:37,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578028943] [2021-06-05 15:00:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:37,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:37,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578028943] [2021-06-05 15:00:37,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578028943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:37,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:37,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:37,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902570957] [2021-06-05 15:00:37,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:37,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:37,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:37,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:37,990 INFO L87 Difference]: Start difference. First operand 8827 states and 31461 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:44,547 INFO L93 Difference]: Finished difference Result 21470 states and 75784 transitions. [2021-06-05 15:00:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-06-05 15:00:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:44,587 INFO L225 Difference]: With dead ends: 21470 [2021-06-05 15:00:44,587 INFO L226 Difference]: Without dead ends: 20925 [2021-06-05 15:00:44,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11174 ImplicationChecksByTransitivity, 4286.5ms TimeCoverageRelationStatistics Valid=1872, Invalid=26858, Unknown=0, NotChecked=0, Total=28730 [2021-06-05 15:00:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20925 states. [2021-06-05 15:00:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20925 to 9629. [2021-06-05 15:00:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9629 states, 9628 states have (on average 3.578728707935189) internal successors, (34456), 9628 states have internal predecessors, (34456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9629 states to 9629 states and 34456 transitions. [2021-06-05 15:00:44,841 INFO L78 Accepts]: Start accepts. Automaton has 9629 states and 34456 transitions. Word has length 47 [2021-06-05 15:00:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:44,841 INFO L482 AbstractCegarLoop]: Abstraction has 9629 states and 34456 transitions. [2021-06-05 15:00:44,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 9629 states and 34456 transitions. [2021-06-05 15:00:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:44,855 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:44,855 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:44,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 15:00:44,855 INFO L430 AbstractCegarLoop]: === Iteration 215 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1302928890, now seen corresponding path program 215 times [2021-06-05 15:00:44,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:44,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562744130] [2021-06-05 15:00:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:45,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:45,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562744130] [2021-06-05 15:00:45,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562744130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:45,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:45,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:45,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43491049] [2021-06-05 15:00:45,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:45,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:45,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:45,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:45,070 INFO L87 Difference]: Start difference. First operand 9629 states and 34456 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:51,923 INFO L93 Difference]: Finished difference Result 21062 states and 74515 transitions. [2021-06-05 15:00:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-06-05 15:00:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:51,962 INFO L225 Difference]: With dead ends: 21062 [2021-06-05 15:00:51,962 INFO L226 Difference]: Without dead ends: 20574 [2021-06-05 15:00:51,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11784 ImplicationChecksByTransitivity, 4403.6ms TimeCoverageRelationStatistics Valid=1970, Invalid=28132, Unknown=0, NotChecked=0, Total=30102 [2021-06-05 15:00:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20574 states. [2021-06-05 15:00:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20574 to 10092. [2021-06-05 15:00:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10092 states, 10091 states have (on average 3.5850758101278366) internal successors, (36177), 10091 states have internal predecessors, (36177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10092 states to 10092 states and 36177 transitions. [2021-06-05 15:00:52,202 INFO L78 Accepts]: Start accepts. Automaton has 10092 states and 36177 transitions. Word has length 47 [2021-06-05 15:00:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:52,202 INFO L482 AbstractCegarLoop]: Abstraction has 10092 states and 36177 transitions. [2021-06-05 15:00:52,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 10092 states and 36177 transitions. [2021-06-05 15:00:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:52,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:52,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:52,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 15:00:52,217 INFO L430 AbstractCegarLoop]: === Iteration 216 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -713231814, now seen corresponding path program 216 times [2021-06-05 15:00:52,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:52,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932074827] [2021-06-05 15:00:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:52,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:52,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932074827] [2021-06-05 15:00:52,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932074827] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:52,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:52,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:52,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157105871] [2021-06-05 15:00:52,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:52,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:52,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:52,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:52,438 INFO L87 Difference]: Start difference. First operand 10092 states and 36177 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:00:58,674 INFO L93 Difference]: Finished difference Result 22066 states and 78190 transitions. [2021-06-05 15:00:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-06-05 15:00:58,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:00:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:00:58,713 INFO L225 Difference]: With dead ends: 22066 [2021-06-05 15:00:58,714 INFO L226 Difference]: Without dead ends: 21548 [2021-06-05 15:00:58,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10007 ImplicationChecksByTransitivity, 4091.0ms TimeCoverageRelationStatistics Valid=1698, Invalid=24384, Unknown=0, NotChecked=0, Total=26082 [2021-06-05 15:00:58,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21548 states. [2021-06-05 15:00:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21548 to 10307. [2021-06-05 15:00:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10307 states, 10306 states have (on average 3.5859693382495634) internal successors, (36957), 10306 states have internal predecessors, (36957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10307 states to 10307 states and 36957 transitions. [2021-06-05 15:00:58,975 INFO L78 Accepts]: Start accepts. Automaton has 10307 states and 36957 transitions. Word has length 47 [2021-06-05 15:00:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:00:58,975 INFO L482 AbstractCegarLoop]: Abstraction has 10307 states and 36957 transitions. [2021-06-05 15:00:58,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:00:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 10307 states and 36957 transitions. [2021-06-05 15:00:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:00:58,993 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:00:58,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:00:58,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 15:00:58,993 INFO L430 AbstractCegarLoop]: === Iteration 217 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:00:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:00:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash 539030326, now seen corresponding path program 217 times [2021-06-05 15:00:58,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:00:58,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582481832] [2021-06-05 15:00:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:00:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:00:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:00:59,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:00:59,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582481832] [2021-06-05 15:00:59,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582481832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:00:59,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:00:59,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:00:59,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704798262] [2021-06-05 15:00:59,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:00:59,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:00:59,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:00:59,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:00:59,209 INFO L87 Difference]: Start difference. First operand 10307 states and 36957 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:04,864 INFO L93 Difference]: Finished difference Result 21218 states and 75598 transitions. [2021-06-05 15:01:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-06-05 15:01:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:04,902 INFO L225 Difference]: With dead ends: 21218 [2021-06-05 15:01:04,902 INFO L226 Difference]: Without dead ends: 20996 [2021-06-05 15:01:04,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7869 ImplicationChecksByTransitivity, 3578.4ms TimeCoverageRelationStatistics Valid=1464, Invalid=19706, Unknown=0, NotChecked=0, Total=21170 [2021-06-05 15:01:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20996 states. [2021-06-05 15:01:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20996 to 10857. [2021-06-05 15:01:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10857 states, 10856 states have (on average 3.5916543846720708) internal successors, (38991), 10856 states have internal predecessors, (38991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10857 states to 10857 states and 38991 transitions. [2021-06-05 15:01:05,140 INFO L78 Accepts]: Start accepts. Automaton has 10857 states and 38991 transitions. Word has length 47 [2021-06-05 15:01:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:05,140 INFO L482 AbstractCegarLoop]: Abstraction has 10857 states and 38991 transitions. [2021-06-05 15:01:05,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10857 states and 38991 transitions. [2021-06-05 15:01:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:05,155 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:05,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:05,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 15:01:05,155 INFO L430 AbstractCegarLoop]: === Iteration 218 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash 472967768, now seen corresponding path program 218 times [2021-06-05 15:01:05,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:05,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065809978] [2021-06-05 15:01:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:05,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:05,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065809978] [2021-06-05 15:01:05,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065809978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:05,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:05,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:05,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043214295] [2021-06-05 15:01:05,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:05,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:05,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:05,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:05,360 INFO L87 Difference]: Start difference. First operand 10857 states and 38991 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:11,096 INFO L93 Difference]: Finished difference Result 22737 states and 81208 transitions. [2021-06-05 15:01:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-06-05 15:01:11,096 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:11,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:11,138 INFO L225 Difference]: With dead ends: 22737 [2021-06-05 15:01:11,138 INFO L226 Difference]: Without dead ends: 22467 [2021-06-05 15:01:11,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9190 ImplicationChecksByTransitivity, 3626.2ms TimeCoverageRelationStatistics Valid=1568, Invalid=22612, Unknown=0, NotChecked=0, Total=24180 [2021-06-05 15:01:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22467 states. [2021-06-05 15:01:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22467 to 10976. [2021-06-05 15:01:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10976 states, 10975 states have (on average 3.5905239179954442) internal successors, (39406), 10975 states have internal predecessors, (39406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10976 states to 10976 states and 39406 transitions. [2021-06-05 15:01:11,401 INFO L78 Accepts]: Start accepts. Automaton has 10976 states and 39406 transitions. Word has length 47 [2021-06-05 15:01:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:11,402 INFO L482 AbstractCegarLoop]: Abstraction has 10976 states and 39406 transitions. [2021-06-05 15:01:11,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10976 states and 39406 transitions. [2021-06-05 15:01:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:11,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:11,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:11,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 15:01:11,418 INFO L430 AbstractCegarLoop]: === Iteration 219 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:11,418 INFO L82 PathProgramCache]: Analyzing trace with hash 328285080, now seen corresponding path program 219 times [2021-06-05 15:01:11,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:11,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219786215] [2021-06-05 15:01:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:11,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:11,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219786215] [2021-06-05 15:01:11,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219786215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:11,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:11,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:11,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177006476] [2021-06-05 15:01:11,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:11,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:11,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:11,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:11,622 INFO L87 Difference]: Start difference. First operand 10976 states and 39406 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:18,766 INFO L93 Difference]: Finished difference Result 22963 states and 81306 transitions. [2021-06-05 15:01:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2021-06-05 15:01:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:18,809 INFO L225 Difference]: With dead ends: 22963 [2021-06-05 15:01:18,809 INFO L226 Difference]: Without dead ends: 22717 [2021-06-05 15:01:18,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12973 ImplicationChecksByTransitivity, 4471.1ms TimeCoverageRelationStatistics Valid=1984, Invalid=30958, Unknown=0, NotChecked=0, Total=32942 [2021-06-05 15:01:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22717 states. [2021-06-05 15:01:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22717 to 11160. [2021-06-05 15:01:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11160 states, 11159 states have (on average 3.593780804731607) internal successors, (40103), 11159 states have internal predecessors, (40103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11160 states to 11160 states and 40103 transitions. [2021-06-05 15:01:19,099 INFO L78 Accepts]: Start accepts. Automaton has 11160 states and 40103 transitions. Word has length 47 [2021-06-05 15:01:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:19,099 INFO L482 AbstractCegarLoop]: Abstraction has 11160 states and 40103 transitions. [2021-06-05 15:01:19,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11160 states and 40103 transitions. [2021-06-05 15:01:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:19,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:19,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:19,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 15:01:19,116 INFO L430 AbstractCegarLoop]: === Iteration 220 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:19,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1934718922, now seen corresponding path program 220 times [2021-06-05 15:01:19,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:19,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698033082] [2021-06-05 15:01:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:19,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:19,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698033082] [2021-06-05 15:01:19,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698033082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:19,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:19,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:19,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845138783] [2021-06-05 15:01:19,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:19,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:19,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:19,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:19,327 INFO L87 Difference]: Start difference. First operand 11160 states and 40103 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:26,018 INFO L93 Difference]: Finished difference Result 22773 states and 81052 transitions. [2021-06-05 15:01:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-06-05 15:01:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:26,061 INFO L225 Difference]: With dead ends: 22773 [2021-06-05 15:01:26,061 INFO L226 Difference]: Without dead ends: 22676 [2021-06-05 15:01:26,064 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11392 ImplicationChecksByTransitivity, 4298.8ms TimeCoverageRelationStatistics Valid=1905, Invalid=27507, Unknown=0, NotChecked=0, Total=29412 [2021-06-05 15:01:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22676 states. [2021-06-05 15:01:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22676 to 11209. [2021-06-05 15:01:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11209 states, 11208 states have (on average 3.59243397573162) internal successors, (40264), 11208 states have internal predecessors, (40264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11209 states to 11209 states and 40264 transitions. [2021-06-05 15:01:26,401 INFO L78 Accepts]: Start accepts. Automaton has 11209 states and 40264 transitions. Word has length 47 [2021-06-05 15:01:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:26,401 INFO L482 AbstractCegarLoop]: Abstraction has 11209 states and 40264 transitions. [2021-06-05 15:01:26,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 11209 states and 40264 transitions. [2021-06-05 15:01:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:26,417 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:26,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:26,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 15:01:26,417 INFO L430 AbstractCegarLoop]: === Iteration 221 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:26,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:26,418 INFO L82 PathProgramCache]: Analyzing trace with hash 634827864, now seen corresponding path program 221 times [2021-06-05 15:01:26,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:26,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051853136] [2021-06-05 15:01:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:26,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:26,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051853136] [2021-06-05 15:01:26,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051853136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:26,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:26,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:26,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342927659] [2021-06-05 15:01:26,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:26,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:26,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:26,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:26,620 INFO L87 Difference]: Start difference. First operand 11209 states and 40264 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:33,242 INFO L93 Difference]: Finished difference Result 23042 states and 82015 transitions. [2021-06-05 15:01:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-06-05 15:01:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:33,284 INFO L225 Difference]: With dead ends: 23042 [2021-06-05 15:01:33,284 INFO L226 Difference]: Without dead ends: 22757 [2021-06-05 15:01:33,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11097 ImplicationChecksByTransitivity, 4095.3ms TimeCoverageRelationStatistics Valid=1794, Invalid=26936, Unknown=0, NotChecked=0, Total=28730 [2021-06-05 15:01:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22757 states. [2021-06-05 15:01:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22757 to 11188. [2021-06-05 15:01:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11188 states, 11187 states have (on average 3.5952444802002326) internal successors, (40220), 11187 states have internal predecessors, (40220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11188 states to 11188 states and 40220 transitions. [2021-06-05 15:01:33,578 INFO L78 Accepts]: Start accepts. Automaton has 11188 states and 40220 transitions. Word has length 47 [2021-06-05 15:01:33,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:33,578 INFO L482 AbstractCegarLoop]: Abstraction has 11188 states and 40220 transitions. [2021-06-05 15:01:33,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 11188 states and 40220 transitions. [2021-06-05 15:01:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:33,595 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:33,595 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:33,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 15:01:33,595 INFO L430 AbstractCegarLoop]: === Iteration 222 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:33,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash -373526892, now seen corresponding path program 222 times [2021-06-05 15:01:33,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:33,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52449552] [2021-06-05 15:01:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:33,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:33,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52449552] [2021-06-05 15:01:33,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52449552] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:33,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:33,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 15:01:33,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248020453] [2021-06-05 15:01:33,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 15:01:33,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:33,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 15:01:33,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 15:01:33,789 INFO L87 Difference]: Start difference. First operand 11188 states and 40220 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:38,544 INFO L93 Difference]: Finished difference Result 20086 states and 72142 transitions. [2021-06-05 15:01:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-06-05 15:01:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:38,581 INFO L225 Difference]: With dead ends: 20086 [2021-06-05 15:01:38,581 INFO L226 Difference]: Without dead ends: 19748 [2021-06-05 15:01:38,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5482 ImplicationChecksByTransitivity, 2729.3ms TimeCoverageRelationStatistics Valid=1105, Invalid=14147, Unknown=0, NotChecked=0, Total=15252 [2021-06-05 15:01:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2021-06-05 15:01:38,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 12554. [2021-06-05 15:01:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 12553 states have (on average 3.6132398629809606) internal successors, (45357), 12553 states have internal predecessors, (45357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 45357 transitions. [2021-06-05 15:01:38,901 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 45357 transitions. Word has length 47 [2021-06-05 15:01:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:38,902 INFO L482 AbstractCegarLoop]: Abstraction has 12554 states and 45357 transitions. [2021-06-05 15:01:38,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 45357 transitions. [2021-06-05 15:01:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:38,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:38,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:38,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 15:01:38,921 INFO L430 AbstractCegarLoop]: === Iteration 223 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1261066836, now seen corresponding path program 223 times [2021-06-05 15:01:38,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:38,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332368910] [2021-06-05 15:01:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:39,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:39,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332368910] [2021-06-05 15:01:39,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332368910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:39,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:39,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:39,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932204748] [2021-06-05 15:01:39,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:39,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:39,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:39,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:39,124 INFO L87 Difference]: Start difference. First operand 12554 states and 45357 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:45,529 INFO L93 Difference]: Finished difference Result 22418 states and 80247 transitions. [2021-06-05 15:01:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2021-06-05 15:01:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:45,569 INFO L225 Difference]: With dead ends: 22418 [2021-06-05 15:01:45,569 INFO L226 Difference]: Without dead ends: 21923 [2021-06-05 15:01:45,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 4112.5ms TimeCoverageRelationStatistics Valid=1776, Invalid=25946, Unknown=0, NotChecked=0, Total=27722 [2021-06-05 15:01:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21923 states. [2021-06-05 15:01:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21923 to 12811. [2021-06-05 15:01:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12811 states, 12810 states have (on average 3.6081967213114754) internal successors, (46221), 12810 states have internal predecessors, (46221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12811 states to 12811 states and 46221 transitions. [2021-06-05 15:01:45,851 INFO L78 Accepts]: Start accepts. Automaton has 12811 states and 46221 transitions. Word has length 47 [2021-06-05 15:01:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:45,851 INFO L482 AbstractCegarLoop]: Abstraction has 12811 states and 46221 transitions. [2021-06-05 15:01:45,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12811 states and 46221 transitions. [2021-06-05 15:01:45,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:45,870 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:45,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:45,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 15:01:45,870 INFO L430 AbstractCegarLoop]: === Iteration 224 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1440283146, now seen corresponding path program 224 times [2021-06-05 15:01:45,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:45,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82324288] [2021-06-05 15:01:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:46,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:46,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82324288] [2021-06-05 15:01:46,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82324288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:46,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:46,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-05 15:01:46,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76317399] [2021-06-05 15:01:46,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 15:01:46,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:46,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 15:01:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-06-05 15:01:46,068 INFO L87 Difference]: Start difference. First operand 12811 states and 46221 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:51,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:51,200 INFO L93 Difference]: Finished difference Result 20084 states and 71937 transitions. [2021-06-05 15:01:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-06-05 15:01:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:51,237 INFO L225 Difference]: With dead ends: 20084 [2021-06-05 15:01:51,237 INFO L226 Difference]: Without dead ends: 19746 [2021-06-05 15:01:51,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6674 ImplicationChecksByTransitivity, 2989.3ms TimeCoverageRelationStatistics Valid=1257, Invalid=16833, Unknown=0, NotChecked=0, Total=18090 [2021-06-05 15:01:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19746 states. [2021-06-05 15:01:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19746 to 12826. [2021-06-05 15:01:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12826 states, 12825 states have (on average 3.608421052631579) internal successors, (46278), 12825 states have internal predecessors, (46278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12826 states to 12826 states and 46278 transitions. [2021-06-05 15:01:51,556 INFO L78 Accepts]: Start accepts. Automaton has 12826 states and 46278 transitions. Word has length 47 [2021-06-05 15:01:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:51,556 INFO L482 AbstractCegarLoop]: Abstraction has 12826 states and 46278 transitions. [2021-06-05 15:01:51,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12826 states and 46278 transitions. [2021-06-05 15:01:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:51,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:51,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:51,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 15:01:51,575 INFO L430 AbstractCegarLoop]: === Iteration 225 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash -71853484, now seen corresponding path program 225 times [2021-06-05 15:01:51,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:51,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557499769] [2021-06-05 15:01:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:51,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:51,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557499769] [2021-06-05 15:01:51,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557499769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:51,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:51,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:51,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658088611] [2021-06-05 15:01:51,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:51,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:51,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:51,779 INFO L87 Difference]: Start difference. First operand 12826 states and 46278 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:01:58,801 INFO L93 Difference]: Finished difference Result 23699 states and 84833 transitions. [2021-06-05 15:01:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-06-05 15:01:58,802 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:01:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:01:58,844 INFO L225 Difference]: With dead ends: 23699 [2021-06-05 15:01:58,844 INFO L226 Difference]: Without dead ends: 23018 [2021-06-05 15:01:58,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11818 ImplicationChecksByTransitivity, 4124.7ms TimeCoverageRelationStatistics Valid=1872, Invalid=28230, Unknown=0, NotChecked=0, Total=30102 [2021-06-05 15:01:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23018 states. [2021-06-05 15:01:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23018 to 13332. [2021-06-05 15:01:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13332 states, 13331 states have (on average 3.6109819218363213) internal successors, (48138), 13331 states have internal predecessors, (48138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13332 states to 13332 states and 48138 transitions. [2021-06-05 15:01:59,152 INFO L78 Accepts]: Start accepts. Automaton has 13332 states and 48138 transitions. Word has length 47 [2021-06-05 15:01:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:01:59,152 INFO L482 AbstractCegarLoop]: Abstraction has 13332 states and 48138 transitions. [2021-06-05 15:01:59,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:01:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13332 states and 48138 transitions. [2021-06-05 15:01:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:01:59,172 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:01:59,172 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:01:59,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 15:01:59,172 INFO L430 AbstractCegarLoop]: === Iteration 226 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:01:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:01:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -575561832, now seen corresponding path program 226 times [2021-06-05 15:01:59,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:01:59,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496888654] [2021-06-05 15:01:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:01:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:01:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:01:59,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:01:59,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496888654] [2021-06-05 15:01:59,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496888654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:01:59,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:01:59,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:01:59,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502002562] [2021-06-05 15:01:59,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:01:59,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:01:59,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:01:59,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:01:59,461 INFO L87 Difference]: Start difference. First operand 13332 states and 48138 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:05,752 INFO L93 Difference]: Finished difference Result 24381 states and 87583 transitions. [2021-06-05 15:02:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-06-05 15:02:05,752 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:05,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:05,797 INFO L225 Difference]: With dead ends: 24381 [2021-06-05 15:02:05,797 INFO L226 Difference]: Without dead ends: 23914 [2021-06-05 15:02:05,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10081 ImplicationChecksByTransitivity, 4183.1ms TimeCoverageRelationStatistics Valid=1693, Invalid=24389, Unknown=0, NotChecked=0, Total=26082 [2021-06-05 15:02:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23914 states. [2021-06-05 15:02:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23914 to 13748. [2021-06-05 15:02:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13748 states, 13747 states have (on average 3.610314977813341) internal successors, (49631), 13747 states have internal predecessors, (49631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 49631 transitions. [2021-06-05 15:02:06,098 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 49631 transitions. Word has length 47 [2021-06-05 15:02:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:06,098 INFO L482 AbstractCegarLoop]: Abstraction has 13748 states and 49631 transitions. [2021-06-05 15:02:06,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 49631 transitions. [2021-06-05 15:02:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:06,119 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:06,119 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:06,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 15:02:06,119 INFO L430 AbstractCegarLoop]: === Iteration 227 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:06,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1102676274, now seen corresponding path program 227 times [2021-06-05 15:02:06,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:06,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578624447] [2021-06-05 15:02:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:06,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:06,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578624447] [2021-06-05 15:02:06,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578624447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:06,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:06,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:06,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683758809] [2021-06-05 15:02:06,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:06,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:06,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:06,323 INFO L87 Difference]: Start difference. First operand 13748 states and 49631 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:11,534 INFO L93 Difference]: Finished difference Result 23835 states and 85249 transitions. [2021-06-05 15:02:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-06-05 15:02:11,535 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:11,578 INFO L225 Difference]: With dead ends: 23835 [2021-06-05 15:02:11,578 INFO L226 Difference]: Without dead ends: 23310 [2021-06-05 15:02:11,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5876 ImplicationChecksByTransitivity, 3240.2ms TimeCoverageRelationStatistics Valid=1211, Invalid=15301, Unknown=0, NotChecked=0, Total=16512 [2021-06-05 15:02:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23310 states. [2021-06-05 15:02:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23310 to 14261. [2021-06-05 15:02:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14261 states, 14260 states have (on average 3.614586255259467) internal successors, (51544), 14260 states have internal predecessors, (51544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14261 states to 14261 states and 51544 transitions. [2021-06-05 15:02:12,005 INFO L78 Accepts]: Start accepts. Automaton has 14261 states and 51544 transitions. Word has length 47 [2021-06-05 15:02:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:12,005 INFO L482 AbstractCegarLoop]: Abstraction has 14261 states and 51544 transitions. [2021-06-05 15:02:12,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 14261 states and 51544 transitions. [2021-06-05 15:02:12,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:12,025 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:12,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:12,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 15:02:12,025 INFO L430 AbstractCegarLoop]: === Iteration 228 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1036613716, now seen corresponding path program 228 times [2021-06-05 15:02:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:12,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750817851] [2021-06-05 15:02:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:12,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:12,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750817851] [2021-06-05 15:02:12,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750817851] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:12,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:12,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:12,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928882461] [2021-06-05 15:02:12,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:12,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:12,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:12,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:12,227 INFO L87 Difference]: Start difference. First operand 14261 states and 51544 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:17,728 INFO L93 Difference]: Finished difference Result 24200 states and 86642 transitions. [2021-06-05 15:02:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-06-05 15:02:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:17,770 INFO L225 Difference]: With dead ends: 24200 [2021-06-05 15:02:17,770 INFO L226 Difference]: Without dead ends: 23649 [2021-06-05 15:02:17,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6934 ImplicationChecksByTransitivity, 3236.2ms TimeCoverageRelationStatistics Valid=1270, Invalid=17636, Unknown=0, NotChecked=0, Total=18906 [2021-06-05 15:02:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23649 states. [2021-06-05 15:02:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23649 to 14486. [2021-06-05 15:02:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14486 states, 14485 states have (on average 3.609941318605454) internal successors, (52290), 14485 states have internal predecessors, (52290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14486 states to 14486 states and 52290 transitions. [2021-06-05 15:02:18,085 INFO L78 Accepts]: Start accepts. Automaton has 14486 states and 52290 transitions. Word has length 47 [2021-06-05 15:02:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:18,085 INFO L482 AbstractCegarLoop]: Abstraction has 14486 states and 52290 transitions. [2021-06-05 15:02:18,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14486 states and 52290 transitions. [2021-06-05 15:02:18,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:18,106 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:18,106 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:18,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 15:02:18,107 INFO L430 AbstractCegarLoop]: === Iteration 229 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:18,107 INFO L82 PathProgramCache]: Analyzing trace with hash -221040522, now seen corresponding path program 229 times [2021-06-05 15:02:18,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:18,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850912161] [2021-06-05 15:02:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:18,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:18,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850912161] [2021-06-05 15:02:18,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850912161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:18,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:18,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:18,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605125929] [2021-06-05 15:02:18,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:18,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:18,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:18,311 INFO L87 Difference]: Start difference. First operand 14486 states and 52290 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:25,754 INFO L93 Difference]: Finished difference Result 26456 states and 94786 transitions. [2021-06-05 15:02:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2021-06-05 15:02:25,754 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:25,804 INFO L225 Difference]: With dead ends: 26456 [2021-06-05 15:02:25,804 INFO L226 Difference]: Without dead ends: 25973 [2021-06-05 15:02:25,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12688 ImplicationChecksByTransitivity, 4416.8ms TimeCoverageRelationStatistics Valid=1977, Invalid=30243, Unknown=0, NotChecked=0, Total=32220 [2021-06-05 15:02:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25973 states. [2021-06-05 15:02:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25973 to 14845. [2021-06-05 15:02:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14845 states, 14844 states have (on average 3.613648612233899) internal successors, (53641), 14844 states have internal predecessors, (53641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14845 states to 14845 states and 53641 transitions. [2021-06-05 15:02:26,152 INFO L78 Accepts]: Start accepts. Automaton has 14845 states and 53641 transitions. Word has length 47 [2021-06-05 15:02:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:26,152 INFO L482 AbstractCegarLoop]: Abstraction has 14845 states and 53641 transitions. [2021-06-05 15:02:26,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14845 states and 53641 transitions. [2021-06-05 15:02:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:26,174 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:26,175 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:26,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 15:02:26,175 INFO L430 AbstractCegarLoop]: === Iteration 230 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:26,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:26,175 INFO L82 PathProgramCache]: Analyzing trace with hash 47622808, now seen corresponding path program 230 times [2021-06-05 15:02:26,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:26,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236789780] [2021-06-05 15:02:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:26,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:26,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236789780] [2021-06-05 15:02:26,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236789780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:26,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:26,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:26,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231770100] [2021-06-05 15:02:26,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:26,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:26,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:26,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:26,377 INFO L87 Difference]: Start difference. First operand 14845 states and 53641 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:28,383 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2021-06-05 15:02:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:34,717 INFO L93 Difference]: Finished difference Result 30319 states and 108230 transitions. [2021-06-05 15:02:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2021-06-05 15:02:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:34,775 INFO L225 Difference]: With dead ends: 30319 [2021-06-05 15:02:34,776 INFO L226 Difference]: Without dead ends: 29715 [2021-06-05 15:02:34,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16816 ImplicationChecksByTransitivity, 5180.2ms TimeCoverageRelationStatistics Valid=2284, Invalid=39128, Unknown=0, NotChecked=0, Total=41412 [2021-06-05 15:02:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29715 states. [2021-06-05 15:02:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29715 to 14990. [2021-06-05 15:02:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14990 states, 14989 states have (on average 3.6146507438788444) internal successors, (54180), 14989 states have internal predecessors, (54180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14990 states to 14990 states and 54180 transitions. [2021-06-05 15:02:35,147 INFO L78 Accepts]: Start accepts. Automaton has 14990 states and 54180 transitions. Word has length 47 [2021-06-05 15:02:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:35,147 INFO L482 AbstractCegarLoop]: Abstraction has 14990 states and 54180 transitions. [2021-06-05 15:02:35,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14990 states and 54180 transitions. [2021-06-05 15:02:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:35,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:35,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:35,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 15:02:35,170 INFO L430 AbstractCegarLoop]: === Iteration 231 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1619044244, now seen corresponding path program 231 times [2021-06-05 15:02:35,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:35,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475265485] [2021-06-05 15:02:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:35,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:35,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475265485] [2021-06-05 15:02:35,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475265485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:35,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:35,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:35,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458693867] [2021-06-05 15:02:35,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:35,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:35,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:35,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:35,398 INFO L87 Difference]: Start difference. First operand 14990 states and 54180 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:43,586 INFO L93 Difference]: Finished difference Result 31990 states and 115051 transitions. [2021-06-05 15:02:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-06-05 15:02:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:43,649 INFO L225 Difference]: With dead ends: 31990 [2021-06-05 15:02:43,649 INFO L226 Difference]: Without dead ends: 31267 [2021-06-05 15:02:43,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14894 ImplicationChecksByTransitivity, 5044.2ms TimeCoverageRelationStatistics Valid=2194, Invalid=34862, Unknown=0, NotChecked=0, Total=37056 [2021-06-05 15:02:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31267 states. [2021-06-05 15:02:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31267 to 15966. [2021-06-05 15:02:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15966 states, 15965 states have (on average 3.623676792984654) internal successors, (57852), 15965 states have internal predecessors, (57852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15966 states to 15966 states and 57852 transitions. [2021-06-05 15:02:44,065 INFO L78 Accepts]: Start accepts. Automaton has 15966 states and 57852 transitions. Word has length 47 [2021-06-05 15:02:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:44,065 INFO L482 AbstractCegarLoop]: Abstraction has 15966 states and 57852 transitions. [2021-06-05 15:02:44,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 15966 states and 57852 transitions. [2021-06-05 15:02:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:44,088 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:44,088 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:44,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 15:02:44,088 INFO L430 AbstractCegarLoop]: === Iteration 232 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:44,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1917935922, now seen corresponding path program 232 times [2021-06-05 15:02:44,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:44,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155893399] [2021-06-05 15:02:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:44,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:44,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155893399] [2021-06-05 15:02:44,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155893399] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:44,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:44,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:44,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688323029] [2021-06-05 15:02:44,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:44,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:44,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:44,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:44,303 INFO L87 Difference]: Start difference. First operand 15966 states and 57852 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:02:52,363 INFO L93 Difference]: Finished difference Result 32336 states and 115883 transitions. [2021-06-05 15:02:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-06-05 15:02:52,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:02:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:02:52,426 INFO L225 Difference]: With dead ends: 32336 [2021-06-05 15:02:52,427 INFO L226 Difference]: Without dead ends: 31756 [2021-06-05 15:02:52,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13831 ImplicationChecksByTransitivity, 4929.2ms TimeCoverageRelationStatistics Valid=2096, Invalid=32686, Unknown=0, NotChecked=0, Total=34782 [2021-06-05 15:02:52,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31756 states. [2021-06-05 15:02:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31756 to 16713. [2021-06-05 15:02:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16713 states, 16712 states have (on average 3.62918860698899) internal successors, (60651), 16712 states have internal predecessors, (60651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16713 states to 16713 states and 60651 transitions. [2021-06-05 15:02:52,842 INFO L78 Accepts]: Start accepts. Automaton has 16713 states and 60651 transitions. Word has length 47 [2021-06-05 15:02:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:02:52,842 INFO L482 AbstractCegarLoop]: Abstraction has 16713 states and 60651 transitions. [2021-06-05 15:02:52,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:02:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 16713 states and 60651 transitions. [2021-06-05 15:02:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:02:52,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:02:52,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:02:52,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 15:02:52,866 INFO L430 AbstractCegarLoop]: === Iteration 233 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:02:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:02:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash 192515412, now seen corresponding path program 233 times [2021-06-05 15:02:52,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:02:52,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674326209] [2021-06-05 15:02:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:02:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:02:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:02:53,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:02:53,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674326209] [2021-06-05 15:02:53,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674326209] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:02:53,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:02:53,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:02:53,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424489933] [2021-06-05 15:02:53,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:02:53,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:02:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:02:53,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:02:53,074 INFO L87 Difference]: Start difference. First operand 16713 states and 60651 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:03:00,213 INFO L93 Difference]: Finished difference Result 31575 states and 113377 transitions. [2021-06-05 15:03:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-06-05 15:03:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:03:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:03:00,270 INFO L225 Difference]: With dead ends: 31575 [2021-06-05 15:03:00,271 INFO L226 Difference]: Without dead ends: 30915 [2021-06-05 15:03:00,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11354 ImplicationChecksByTransitivity, 4180.4ms TimeCoverageRelationStatistics Valid=1745, Invalid=27325, Unknown=0, NotChecked=0, Total=29070 [2021-06-05 15:03:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30915 states. [2021-06-05 15:03:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30915 to 16871. [2021-06-05 15:03:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16871 states, 16870 states have (on average 3.6272080616478957) internal successors, (61191), 16870 states have internal predecessors, (61191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 61191 transitions. [2021-06-05 15:03:00,673 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 61191 transitions. Word has length 47 [2021-06-05 15:03:00,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:03:00,673 INFO L482 AbstractCegarLoop]: Abstraction has 16871 states and 61191 transitions. [2021-06-05 15:03:00,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:00,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 61191 transitions. [2021-06-05 15:03:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:03:00,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:03:00,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:03:00,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 15:03:00,698 INFO L430 AbstractCegarLoop]: === Iteration 234 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:03:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:03:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1857972870, now seen corresponding path program 234 times [2021-06-05 15:03:00,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:03:00,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444990948] [2021-06-05 15:03:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:03:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:03:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:03:00,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:03:00,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444990948] [2021-06-05 15:03:00,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444990948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:03:00,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:03:00,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:03:00,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481100610] [2021-06-05 15:03:00,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:03:00,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:03:00,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:03:00,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:03:00,914 INFO L87 Difference]: Start difference. First operand 16871 states and 61191 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:01,747 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-06-05 15:03:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:03:08,525 INFO L93 Difference]: Finished difference Result 33481 states and 119699 transitions. [2021-06-05 15:03:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-06-05 15:03:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:03:08,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:03:08,590 INFO L225 Difference]: With dead ends: 33481 [2021-06-05 15:03:08,591 INFO L226 Difference]: Without dead ends: 32789 [2021-06-05 15:03:08,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14532 ImplicationChecksByTransitivity, 4967.3ms TimeCoverageRelationStatistics Valid=2200, Invalid=34090, Unknown=0, NotChecked=0, Total=36290 [2021-06-05 15:03:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32789 states. [2021-06-05 15:03:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32789 to 17317. [2021-06-05 15:03:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17317 states, 17316 states have (on average 3.6300531300531302) internal successors, (62858), 17316 states have internal predecessors, (62858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17317 states to 17317 states and 62858 transitions. [2021-06-05 15:03:09,000 INFO L78 Accepts]: Start accepts. Automaton has 17317 states and 62858 transitions. Word has length 47 [2021-06-05 15:03:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:03:09,001 INFO L482 AbstractCegarLoop]: Abstraction has 17317 states and 62858 transitions. [2021-06-05 15:03:09,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:09,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17317 states and 62858 transitions. [2021-06-05 15:03:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:03:09,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:03:09,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:03:09,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 15:03:09,027 INFO L430 AbstractCegarLoop]: === Iteration 235 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:03:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:03:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1691787752, now seen corresponding path program 235 times [2021-06-05 15:03:09,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:03:09,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368718113] [2021-06-05 15:03:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:03:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:03:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:03:09,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:03:09,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368718113] [2021-06-05 15:03:09,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368718113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:03:09,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:03:09,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:03:09,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571090876] [2021-06-05 15:03:09,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:03:09,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:03:09,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:03:09,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:03:09,239 INFO L87 Difference]: Start difference. First operand 17317 states and 62858 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:03:16,279 INFO L93 Difference]: Finished difference Result 31648 states and 113603 transitions. [2021-06-05 15:03:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2021-06-05 15:03:16,279 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:03:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:03:16,340 INFO L225 Difference]: With dead ends: 31648 [2021-06-05 15:03:16,340 INFO L226 Difference]: Without dead ends: 31499 [2021-06-05 15:03:16,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12115 ImplicationChecksByTransitivity, 4618.7ms TimeCoverageRelationStatistics Valid=1907, Invalid=28893, Unknown=0, NotChecked=0, Total=30800 [2021-06-05 15:03:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31499 states. [2021-06-05 15:03:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31499 to 17338. [2021-06-05 15:03:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17338 states, 17337 states have (on average 3.62917459768126) internal successors, (62919), 17337 states have internal predecessors, (62919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17338 states to 17338 states and 62919 transitions. [2021-06-05 15:03:16,736 INFO L78 Accepts]: Start accepts. Automaton has 17338 states and 62919 transitions. Word has length 47 [2021-06-05 15:03:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:03:16,736 INFO L482 AbstractCegarLoop]: Abstraction has 17338 states and 62919 transitions. [2021-06-05 15:03:16,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 17338 states and 62919 transitions. [2021-06-05 15:03:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:03:16,761 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:03:16,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:03:16,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 15:03:16,761 INFO L430 AbstractCegarLoop]: === Iteration 236 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:03:16,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:03:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash -439525612, now seen corresponding path program 236 times [2021-06-05 15:03:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:03:16,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000863544] [2021-06-05 15:03:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:03:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:03:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:03:16,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:03:16,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000863544] [2021-06-05 15:03:16,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000863544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:03:16,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:03:16,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:03:16,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135208796] [2021-06-05 15:03:16,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:03:16,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:03:16,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:03:16,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:03:16,971 INFO L87 Difference]: Start difference. First operand 17338 states and 62919 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:23,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:03:23,291 INFO L93 Difference]: Finished difference Result 30955 states and 110955 transitions. [2021-06-05 15:03:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2021-06-05 15:03:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:03:23,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:03:23,353 INFO L225 Difference]: With dead ends: 30955 [2021-06-05 15:03:23,353 INFO L226 Difference]: Without dead ends: 30617 [2021-06-05 15:03:23,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9049 ImplicationChecksByTransitivity, 3969.4ms TimeCoverageRelationStatistics Valid=1562, Invalid=22308, Unknown=0, NotChecked=0, Total=23870 [2021-06-05 15:03:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30617 states. [2021-06-05 15:03:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30617 to 17339. [2021-06-05 15:03:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17339 states, 17338 states have (on average 3.6306955819587032) internal successors, (62949), 17338 states have internal predecessors, (62949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17339 states to 17339 states and 62949 transitions. [2021-06-05 15:03:23,753 INFO L78 Accepts]: Start accepts. Automaton has 17339 states and 62949 transitions. Word has length 47 [2021-06-05 15:03:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:03:23,753 INFO L482 AbstractCegarLoop]: Abstraction has 17339 states and 62949 transitions. [2021-06-05 15:03:23,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17339 states and 62949 transitions. [2021-06-05 15:03:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:03:23,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:03:23,778 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:03:23,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 15:03:23,778 INFO L430 AbstractCegarLoop]: === Iteration 237 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:03:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:03:23,779 INFO L82 PathProgramCache]: Analyzing trace with hash -505588170, now seen corresponding path program 237 times [2021-06-05 15:03:23,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:03:23,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337444342] [2021-06-05 15:03:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:03:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:03:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:03:23,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:03:23,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337444342] [2021-06-05 15:03:23,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337444342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:03:23,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:03:23,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:03:23,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970079295] [2021-06-05 15:03:23,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:03:23,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:03:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:03:23,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:03:23,985 INFO L87 Difference]: Start difference. First operand 17339 states and 62949 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:03:30,452 INFO L93 Difference]: Finished difference Result 32201 states and 115217 transitions. [2021-06-05 15:03:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2021-06-05 15:03:30,452 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-05 15:03:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:03:30,512 INFO L225 Difference]: With dead ends: 32201 [2021-06-05 15:03:30,512 INFO L226 Difference]: Without dead ends: 31459 [2021-06-05 15:03:30,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9921 ImplicationChecksByTransitivity, 3836.7ms TimeCoverageRelationStatistics Valid=1620, Invalid=24140, Unknown=0, NotChecked=0, Total=25760 [2021-06-05 15:03:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31459 states. [2021-06-05 15:03:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31459 to 17510. [2021-06-05 15:03:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17510 states, 17509 states have (on average 3.633674110457479) internal successors, (63622), 17509 states have internal predecessors, (63622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17510 states to 17510 states and 63622 transitions. [2021-06-05 15:03:30,991 INFO L78 Accepts]: Start accepts. Automaton has 17510 states and 63622 transitions. Word has length 47 [2021-06-05 15:03:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:03:30,991 INFO L482 AbstractCegarLoop]: Abstraction has 17510 states and 63622 transitions. [2021-06-05 15:03:30,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:03:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17510 states and 63622 transitions. [2021-06-05 15:03:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-05 15:03:31,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:03:31,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:03:31,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 15:03:31,017 INFO L430 AbstractCegarLoop]: === Iteration 238 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:03:31,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:03:31,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1381692436, now seen corresponding path program 238 times [2021-06-05 15:03:31,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:03:31,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696174961] [2021-06-05 15:03:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:03:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:03:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:03:31,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:03:31,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696174961] [2021-06-05 15:03:31,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696174961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:03:31,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:03:31,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-06-05 15:03:31,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192511797] [2021-06-05 15:03:31,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 15:03:31,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:03:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 15:03:31,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-06-05 15:03:31,221 INFO L87 Difference]: Start difference. First operand 17510 states and 63622 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 15:03:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 15:03:31,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 15:03:31,763 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 15:03:31,765 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 15:03:31,767 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 15:03:31,767 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:03:31 BasicIcfg [2021-06-05 15:03:31,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 15:03:31,767 INFO L168 Benchmark]: Toolchain (without parser) took 703715.02 ms. Allocated memory was 346.0 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 325.1 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 641.4 MB. Max. memory is 16.0 GB. [2021-06-05 15:03:31,767 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.3 MB in the beginning and 326.2 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 15:03:31,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.92 ms. Allocated memory is still 346.0 MB. Free memory was 325.0 MB in the beginning and 323.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 15:03:31,768 INFO L168 Benchmark]: Boogie Preprocessor took 16.85 ms. Allocated memory is still 346.0 MB. Free memory was 323.5 MB in the beginning and 322.6 MB in the end (delta: 961.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 15:03:31,768 INFO L168 Benchmark]: RCFGBuilder took 215.31 ms. Allocated memory is still 346.0 MB. Free memory was 322.5 MB in the beginning and 308.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 15:03:31,768 INFO L168 Benchmark]: TraceAbstraction took 703457.76 ms. Allocated memory was 346.0 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 622.5 MB. Max. memory is 16.0 GB. [2021-06-05 15:03:31,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.3 MB in the beginning and 326.2 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.92 ms. Allocated memory is still 346.0 MB. Free memory was 325.0 MB in the beginning and 323.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.85 ms. Allocated memory is still 346.0 MB. Free memory was 323.5 MB in the beginning and 322.6 MB in the end (delta: 961.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 215.31 ms. Allocated memory is still 346.0 MB. Free memory was 322.5 MB in the beginning and 308.7 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 703457.76 ms. Allocated memory was 346.0 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 308.3 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 622.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (17510states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 703255.7ms, OverallIterations: 238, TraceHistogramMax: 1, EmptinessCheckTime: 2667.4ms, AutomataDifference: 611818.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 441.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71499 SDtfs, 165139 SDslu, 851791 SDs, 0 SdLazy, 659199 SolverSat, 30796 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 207846.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18155 GetRequests, 273 SyntacticMatches, 286 SemanticMatches, 17595 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582885 ImplicationChecksByTransitivity, 372802.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17510occurred in iteration=237, InterpolantAutomatonStates: 16234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34414.3ms AutomataMinimizationTime, 237 MinimizatonAttempts, 745543 StatesRemovedByMinimization, 235 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 159.6ms SsaConstructionTime, 518.0ms SatisfiabilityAnalysisTime, 52260.4ms InterpolantComputationTime, 11186 NumberOfCodeBlocks, 11186 NumberOfCodeBlocksAsserted, 238 NumberOfCheckSat, 10948 ConstructedInterpolants, 0 QuantifiedInterpolants, 149399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 238 InterpolantComputations, 238 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown