/usr/bin/java -Xmx8000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 19:18:03,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 19:18:03,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 19:18:03,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 19:18:03,649 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.epf [2021-08-12 19:18:03,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 19:18:03,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 19:18:03,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 19:18:03,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 19:18:03,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 19:18:03,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 19:18:03,688 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 19:18:03,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 19:18:03,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 19:18:03,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 19:18:03,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 19:18:03,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 19:18:03,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 19:18:03,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 19:18:03,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 19:18:03,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 19:18:03,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 19:18:03,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 19:18:03,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 19:18:03,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 19:18:03,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 19:18:03,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 19:18:03,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 19:18:03,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 19:18:03,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 19:18:04,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 19:18:04,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 19:18:04,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 19:18:04,035 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 19:18:04,036 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 19:18:04,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-08-12 19:18:04,037 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-08-12 19:18:04,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 19:18:04,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 19:18:04,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 19:18:04,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 19:18:04,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 19:18:04,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 19:18:04,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 19:18:04,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 19:18:04,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 19:18:04,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/1) ... [2021-08-12 19:18:04,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 19:18:04,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 19:18:04,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 19:18:04,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 19:18:04,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (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 [2021-08-12 19:18:04,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 19:18:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 19:18:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 19:18:04,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 19:18:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 19:18:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 19:18:04,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 19:18:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 19:18:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 19:18:04,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-12 19:18:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 19:18:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 19:18:04,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-12 19:18:04,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-12 19:18:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-12 19:18:04,229 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-12 19:18:04,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-12 19:18:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-12 19:18:04,230 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-08-12 19:18:04,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-08-12 19:18:04,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-08-12 19:18:04,231 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 19:18:04,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 19:18:04,394 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 19:18:04,395 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:18:04 BoogieIcfgContainer [2021-08-12 19:18:04,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 19:18:04,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 19:18:04,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 19:18:04,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 19:18:04,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:18:04" (1/2) ... [2021-08-12 19:18:04,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b66047a and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 07:18:04, skipping insertion in model container [2021-08-12 19:18:04,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:18:04" (2/2) ... [2021-08-12 19:18:04,401 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-08-12 19:18:04,406 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 19:18:04,407 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 19:18:04,407 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 19:18:04,538 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-08-12 19:18:04,568 INFO L255 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-12 19:18:04,585 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 19:18:04,585 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 19:18:04,586 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 19:18:04,586 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 19:18:04,586 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 19:18:04,586 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 19:18:04,586 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 19:18:04,586 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 19:18:04,602 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-08-12 19:18:05,126 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) [2021-08-12 19:18:05,178 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) [2021-08-12 19:18:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:05,277 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:05,278 INFO L550 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] [2021-08-12 19:18:05,279 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1343820696, now seen corresponding path program 1 times [2021-08-12 19:18:05,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:05,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875155697] [2021-08-12 19:18:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:05,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:05,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875155697] [2021-08-12 19:18:05,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875155697] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:05,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:05,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:18:05,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943853760] [2021-08-12 19:18:05,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 19:18:05,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:05,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 19:18:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:18:05,520 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) [2021-08-12 19:18:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:05,805 INFO L93 Difference]: Finished difference Result 9613 states and 35060 transitions. [2021-08-12 19:18:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 19:18:05,807 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 [2021-08-12 19:18:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:05,881 INFO L225 Difference]: With dead ends: 9613 [2021-08-12 19:18:05,881 INFO L226 Difference]: Without dead ends: 5614 [2021-08-12 19:18:05,921 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:18:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-08-12 19:18:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-08-12 19:18:06,258 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) [2021-08-12 19:18:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-08-12 19:18:06,300 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-08-12 19:18:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:06,300 INFO L482 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-08-12 19:18:06,301 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) [2021-08-12 19:18:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-08-12 19:18:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:06,322 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:06,322 INFO L550 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] [2021-08-12 19:18:06,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 19:18:06,323 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:06,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:06,324 INFO L82 PathProgramCache]: Analyzing trace with hash -607358788, now seen corresponding path program 2 times [2021-08-12 19:18:06,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:06,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131986143] [2021-08-12 19:18:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:06,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:06,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131986143] [2021-08-12 19:18:06,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131986143] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:06,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:06,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:18:06,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866597867] [2021-08-12 19:18:06,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 19:18:06,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:06,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 19:18:06,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:18:06,388 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) [2021-08-12 19:18:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:06,584 INFO L93 Difference]: Finished difference Result 7333 states and 26037 transitions. [2021-08-12 19:18:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 19:18:06,585 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 [2021-08-12 19:18:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:06,628 INFO L225 Difference]: With dead ends: 7333 [2021-08-12 19:18:06,628 INFO L226 Difference]: Without dead ends: 4822 [2021-08-12 19:18:06,634 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:18:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-08-12 19:18:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-08-12 19:18:06,875 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) [2021-08-12 19:18:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-08-12 19:18:06,913 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-08-12 19:18:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:06,913 INFO L482 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-08-12 19:18:06,914 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) [2021-08-12 19:18:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-08-12 19:18:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:06,930 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:06,930 INFO L550 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] [2021-08-12 19:18:06,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 19:18:06,931 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:06,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1880871100, now seen corresponding path program 3 times [2021-08-12 19:18:06,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:06,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138588708] [2021-08-12 19:18:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:07,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:07,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138588708] [2021-08-12 19:18:07,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138588708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:07,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:07,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:07,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503290596] [2021-08-12 19:18:07,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:07,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:07,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:07,515 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) [2021-08-12 19:18:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:09,242 INFO L93 Difference]: Finished difference Result 5575 states and 19646 transitions. [2021-08-12 19:18:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:18:09,245 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 [2021-08-12 19:18:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:09,292 INFO L225 Difference]: With dead ends: 5575 [2021-08-12 19:18:09,292 INFO L226 Difference]: Without dead ends: 5446 [2021-08-12 19:18:09,295 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1063.2ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-08-12 19:18:09,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-08-12 19:18:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5018. [2021-08-12 19:18:09,483 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) [2021-08-12 19:18:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17748 transitions. [2021-08-12 19:18:09,514 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17748 transitions. Word has length 47 [2021-08-12 19:18:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:09,514 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 17748 transitions. [2021-08-12 19:18:09,514 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) [2021-08-12 19:18:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17748 transitions. [2021-08-12 19:18:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:09,530 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:09,530 INFO L550 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] [2021-08-12 19:18:09,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 19:18:09,531 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:09,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1097616762, now seen corresponding path program 4 times [2021-08-12 19:18:09,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:09,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072271690] [2021-08-12 19:18:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:09,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:09,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072271690] [2021-08-12 19:18:09,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072271690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:09,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:09,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:09,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397358593] [2021-08-12 19:18:09,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:09,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:09,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:09,884 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) [2021-08-12 19:18:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:12,474 INFO L93 Difference]: Finished difference Result 7634 states and 26871 transitions. [2021-08-12 19:18:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-12 19:18:12,475 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 [2021-08-12 19:18:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:12,515 INFO L225 Difference]: With dead ends: 7634 [2021-08-12 19:18:12,516 INFO L226 Difference]: Without dead ends: 7543 [2021-08-12 19:18:12,520 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1353.8ms TimeCoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2021-08-12 19:18:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7543 states. [2021-08-12 19:18:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7543 to 5222. [2021-08-12 19:18:12,717 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) [2021-08-12 19:18:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 18418 transitions. [2021-08-12 19:18:12,746 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 18418 transitions. Word has length 47 [2021-08-12 19:18:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:12,747 INFO L482 AbstractCegarLoop]: Abstraction has 5222 states and 18418 transitions. [2021-08-12 19:18:12,747 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) [2021-08-12 19:18:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 18418 transitions. [2021-08-12 19:18:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:12,766 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:12,766 INFO L550 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] [2021-08-12 19:18:12,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 19:18:12,766 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash 246964854, now seen corresponding path program 5 times [2021-08-12 19:18:12,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:12,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60262866] [2021-08-12 19:18:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:13,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:13,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60262866] [2021-08-12 19:18:13,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60262866] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:13,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:13,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:13,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889786135] [2021-08-12 19:18:13,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:13,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:13,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:13,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:13,268 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) [2021-08-12 19:18:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:15,698 INFO L93 Difference]: Finished difference Result 8298 states and 29493 transitions. [2021-08-12 19:18:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-12 19:18:15,703 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 [2021-08-12 19:18:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:15,745 INFO L225 Difference]: With dead ends: 8298 [2021-08-12 19:18:15,745 INFO L226 Difference]: Without dead ends: 8193 [2021-08-12 19:18:15,751 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1290.4ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-08-12 19:18:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2021-08-12 19:18:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 5210. [2021-08-12 19:18:16,005 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) [2021-08-12 19:18:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 18382 transitions. [2021-08-12 19:18:16,039 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 18382 transitions. Word has length 47 [2021-08-12 19:18:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:16,039 INFO L482 AbstractCegarLoop]: Abstraction has 5210 states and 18382 transitions. [2021-08-12 19:18:16,039 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) [2021-08-12 19:18:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 18382 transitions. [2021-08-12 19:18:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:16,053 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:16,053 INFO L550 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] [2021-08-12 19:18:16,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 19:18:16,054 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1872194890, now seen corresponding path program 6 times [2021-08-12 19:18:16,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:16,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113023719] [2021-08-12 19:18:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:16,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:16,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113023719] [2021-08-12 19:18:16,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113023719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:16,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:16,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:18:16,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665749736] [2021-08-12 19:18:16,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:18:16,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:18:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:18:16,352 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) [2021-08-12 19:18:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:18,310 INFO L93 Difference]: Finished difference Result 6917 states and 24043 transitions. [2021-08-12 19:18:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-12 19:18:18,310 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 [2021-08-12 19:18:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:18,344 INFO L225 Difference]: With dead ends: 6917 [2021-08-12 19:18:18,344 INFO L226 Difference]: Without dead ends: 6778 [2021-08-12 19:18:18,349 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1033.4ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-08-12 19:18:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-08-12 19:18:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5402. [2021-08-12 19:18:18,525 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) [2021-08-12 19:18:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 19000 transitions. [2021-08-12 19:18:18,556 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 19000 transitions. Word has length 47 [2021-08-12 19:18:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:18,556 INFO L482 AbstractCegarLoop]: Abstraction has 5402 states and 19000 transitions. [2021-08-12 19:18:18,557 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) [2021-08-12 19:18:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 19000 transitions. [2021-08-12 19:18:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:18,569 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:18,569 INFO L550 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] [2021-08-12 19:18:18,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 19:18:18,569 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:18,570 INFO L82 PathProgramCache]: Analyzing trace with hash 443897944, now seen corresponding path program 7 times [2021-08-12 19:18:18,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:18,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219263081] [2021-08-12 19:18:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:18,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:18,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219263081] [2021-08-12 19:18:18,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219263081] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:18,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:18,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:18,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399812809] [2021-08-12 19:18:18,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:18,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:18,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:18,916 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) [2021-08-12 19:18:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:21,033 INFO L93 Difference]: Finished difference Result 7852 states and 27583 transitions. [2021-08-12 19:18:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-12 19:18:21,034 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 [2021-08-12 19:18:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:21,069 INFO L225 Difference]: With dead ends: 7852 [2021-08-12 19:18:21,069 INFO L226 Difference]: Without dead ends: 7761 [2021-08-12 19:18:21,074 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1219.4ms TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2021-08-12 19:18:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2021-08-12 19:18:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 5406. [2021-08-12 19:18:21,255 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) [2021-08-12 19:18:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 19008 transitions. [2021-08-12 19:18:21,284 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 19008 transitions. Word has length 47 [2021-08-12 19:18:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:21,285 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 19008 transitions. [2021-08-12 19:18:21,285 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) [2021-08-12 19:18:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 19008 transitions. [2021-08-12 19:18:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:21,297 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:21,297 INFO L550 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] [2021-08-12 19:18:21,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 19:18:21,297 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:21,298 INFO L82 PathProgramCache]: Analyzing trace with hash -406753964, now seen corresponding path program 8 times [2021-08-12 19:18:21,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:21,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172561991] [2021-08-12 19:18:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:21,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:21,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172561991] [2021-08-12 19:18:21,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172561991] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:21,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:21,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:21,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353035091] [2021-08-12 19:18:21,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:21,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:21,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:21,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:21,611 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) [2021-08-12 19:18:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:23,639 INFO L93 Difference]: Finished difference Result 8219 states and 29115 transitions. [2021-08-12 19:18:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-12 19:18:23,639 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 [2021-08-12 19:18:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:23,667 INFO L225 Difference]: With dead ends: 8219 [2021-08-12 19:18:23,667 INFO L226 Difference]: Without dead ends: 8086 [2021-08-12 19:18:23,672 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1115.3ms TimeCoverageRelationStatistics Valid=275, Invalid=2481, Unknown=0, NotChecked=0, Total=2756 [2021-08-12 19:18:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-08-12 19:18:23,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 5366. [2021-08-12 19:18:23,849 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) [2021-08-12 19:18:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18876 transitions. [2021-08-12 19:18:23,876 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18876 transitions. Word has length 47 [2021-08-12 19:18:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:23,876 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 18876 transitions. [2021-08-12 19:18:23,877 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) [2021-08-12 19:18:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18876 transitions. [2021-08-12 19:18:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:23,888 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:23,889 INFO L550 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] [2021-08-12 19:18:23,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 19:18:23,889 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash -813197124, now seen corresponding path program 9 times [2021-08-12 19:18:23,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:23,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887575189] [2021-08-12 19:18:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:24,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:24,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887575189] [2021-08-12 19:18:24,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887575189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:24,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:24,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:24,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585455575] [2021-08-12 19:18:24,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:24,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:24,165 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) [2021-08-12 19:18:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:25,583 INFO L93 Difference]: Finished difference Result 6009 states and 21033 transitions. [2021-08-12 19:18:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:18:25,583 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 [2021-08-12 19:18:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:25,605 INFO L225 Difference]: With dead ends: 6009 [2021-08-12 19:18:25,605 INFO L226 Difference]: Without dead ends: 5880 [2021-08-12 19:18:25,607 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 816.6ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:18:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2021-08-12 19:18:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5378. [2021-08-12 19:18:25,765 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) [2021-08-12 19:18:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18906 transitions. [2021-08-12 19:18:25,791 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18906 transitions. Word has length 47 [2021-08-12 19:18:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:25,792 INFO L482 AbstractCegarLoop]: Abstraction has 5378 states and 18906 transitions. [2021-08-12 19:18:25,792 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) [2021-08-12 19:18:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18906 transitions. [2021-08-12 19:18:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:25,804 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:25,804 INFO L550 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] [2021-08-12 19:18:25,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 19:18:25,805 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1596451462, now seen corresponding path program 10 times [2021-08-12 19:18:25,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:25,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285890047] [2021-08-12 19:18:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:26,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:26,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285890047] [2021-08-12 19:18:26,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285890047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:26,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:26,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:26,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598989781] [2021-08-12 19:18:26,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:26,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:26,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:26,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:26,100 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) [2021-08-12 19:18:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:28,237 INFO L93 Difference]: Finished difference Result 7956 states and 27966 transitions. [2021-08-12 19:18:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-12 19:18:28,238 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 [2021-08-12 19:18:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:28,261 INFO L225 Difference]: With dead ends: 7956 [2021-08-12 19:18:28,261 INFO L226 Difference]: Without dead ends: 7865 [2021-08-12 19:18:28,264 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1163.9ms TimeCoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2021-08-12 19:18:28,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7865 states. [2021-08-12 19:18:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7865 to 5394. [2021-08-12 19:18:28,454 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) [2021-08-12 19:18:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18952 transitions. [2021-08-12 19:18:28,482 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18952 transitions. Word has length 47 [2021-08-12 19:18:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:28,484 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18952 transitions. [2021-08-12 19:18:28,484 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) [2021-08-12 19:18:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18952 transitions. [2021-08-12 19:18:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:28,496 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:28,496 INFO L550 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] [2021-08-12 19:18:28,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 19:18:28,496 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:28,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:28,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1847863926, now seen corresponding path program 11 times [2021-08-12 19:18:28,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:28,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914251669] [2021-08-12 19:18:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:28,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:28,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914251669] [2021-08-12 19:18:28,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914251669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:28,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:28,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:28,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500712436] [2021-08-12 19:18:28,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:28,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:28,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:28,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:28,834 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) [2021-08-12 19:18:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:31,221 INFO L93 Difference]: Finished difference Result 8524 states and 30216 transitions. [2021-08-12 19:18:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-12 19:18:31,221 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 [2021-08-12 19:18:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:31,244 INFO L225 Difference]: With dead ends: 8524 [2021-08-12 19:18:31,244 INFO L226 Difference]: Without dead ends: 8419 [2021-08-12 19:18:31,248 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1345.4ms TimeCoverageRelationStatistics Valid=328, Invalid=3212, Unknown=0, NotChecked=0, Total=3540 [2021-08-12 19:18:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2021-08-12 19:18:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 5374. [2021-08-12 19:18:31,442 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) [2021-08-12 19:18:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18900 transitions. [2021-08-12 19:18:31,471 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18900 transitions. Word has length 47 [2021-08-12 19:18:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:31,471 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18900 transitions. [2021-08-12 19:18:31,471 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) [2021-08-12 19:18:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18900 transitions. [2021-08-12 19:18:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:31,484 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:31,484 INFO L550 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] [2021-08-12 19:18:31,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-12 19:18:31,485 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:31,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:31,485 INFO L82 PathProgramCache]: Analyzing trace with hash 728726234, now seen corresponding path program 12 times [2021-08-12 19:18:31,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:31,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838697801] [2021-08-12 19:18:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:31,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:31,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838697801] [2021-08-12 19:18:31,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838697801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:31,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:31,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:31,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833975551] [2021-08-12 19:18:31,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:31,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:31,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:31,758 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) [2021-08-12 19:18:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:33,157 INFO L93 Difference]: Finished difference Result 5783 states and 20212 transitions. [2021-08-12 19:18:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:18:33,158 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 [2021-08-12 19:18:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:33,173 INFO L225 Difference]: With dead ends: 5783 [2021-08-12 19:18:33,173 INFO L226 Difference]: Without dead ends: 5654 [2021-08-12 19:18:33,175 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 788.5ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:18:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-08-12 19:18:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5386. [2021-08-12 19:18:33,336 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) [2021-08-12 19:18:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18930 transitions. [2021-08-12 19:18:33,359 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18930 transitions. Word has length 47 [2021-08-12 19:18:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:33,360 INFO L482 AbstractCegarLoop]: Abstraction has 5386 states and 18930 transitions. [2021-08-12 19:18:33,360 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) [2021-08-12 19:18:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18930 transitions. [2021-08-12 19:18:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:33,370 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:33,370 INFO L550 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] [2021-08-12 19:18:33,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 19:18:33,371 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:33,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1738869802, now seen corresponding path program 13 times [2021-08-12 19:18:33,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:33,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800814833] [2021-08-12 19:18:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:33,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:33,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800814833] [2021-08-12 19:18:33,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800814833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:33,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:33,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:33,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588958871] [2021-08-12 19:18:33,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:33,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:33,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:33,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:33,664 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) [2021-08-12 19:18:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:35,010 INFO L93 Difference]: Finished difference Result 5852 states and 20414 transitions. [2021-08-12 19:18:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:18:35,011 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 [2021-08-12 19:18:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:35,032 INFO L225 Difference]: With dead ends: 5852 [2021-08-12 19:18:35,033 INFO L226 Difference]: Without dead ends: 5753 [2021-08-12 19:18:35,036 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 782.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:18:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2021-08-12 19:18:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5392. [2021-08-12 19:18:35,203 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) [2021-08-12 19:18:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18945 transitions. [2021-08-12 19:18:35,227 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18945 transitions. Word has length 47 [2021-08-12 19:18:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:35,228 INFO L482 AbstractCegarLoop]: Abstraction has 5392 states and 18945 transitions. [2021-08-12 19:18:35,228 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) [2021-08-12 19:18:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18945 transitions. [2021-08-12 19:18:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:35,238 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:35,238 INFO L550 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] [2021-08-12 19:18:35,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 19:18:35,239 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1736195976, now seen corresponding path program 14 times [2021-08-12 19:18:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:35,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49570678] [2021-08-12 19:18:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:35,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:35,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49570678] [2021-08-12 19:18:35,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49570678] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:35,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:35,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:35,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766246587] [2021-08-12 19:18:35,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:35,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:35,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:35,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:35,589 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) [2021-08-12 19:18:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:36,931 INFO L93 Difference]: Finished difference Result 5753 states and 20109 transitions. [2021-08-12 19:18:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:18:36,932 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 [2021-08-12 19:18:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:36,948 INFO L225 Difference]: With dead ends: 5753 [2021-08-12 19:18:36,949 INFO L226 Difference]: Without dead ends: 5642 [2021-08-12 19:18:36,951 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 788.5ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:18:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-08-12 19:18:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5374. [2021-08-12 19:18:37,102 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) [2021-08-12 19:18:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 18896 transitions. [2021-08-12 19:18:37,123 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 18896 transitions. Word has length 47 [2021-08-12 19:18:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:37,123 INFO L482 AbstractCegarLoop]: Abstraction has 5374 states and 18896 transitions. [2021-08-12 19:18:37,123 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) [2021-08-12 19:18:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 18896 transitions. [2021-08-12 19:18:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:37,133 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:37,133 INFO L550 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] [2021-08-12 19:18:37,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-12 19:18:37,134 INFO L430 AbstractCegarLoop]: === Iteration 15 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1817793914, now seen corresponding path program 15 times [2021-08-12 19:18:37,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:37,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542453695] [2021-08-12 19:18:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:37,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:37,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542453695] [2021-08-12 19:18:37,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542453695] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:37,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:37,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:37,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768673780] [2021-08-12 19:18:37,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:37,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:37,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:37,423 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) [2021-08-12 19:18:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:39,085 INFO L93 Difference]: Finished difference Result 5969 states and 20774 transitions. [2021-08-12 19:18:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:18:39,085 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 [2021-08-12 19:18:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:39,102 INFO L225 Difference]: With dead ends: 5969 [2021-08-12 19:18:39,102 INFO L226 Difference]: Without dead ends: 5846 [2021-08-12 19:18:39,103 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1002.2ms TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2021-08-12 19:18:39,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-08-12 19:18:39,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5380. [2021-08-12 19:18:39,228 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) [2021-08-12 19:18:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 18909 transitions. [2021-08-12 19:18:39,252 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 18909 transitions. Word has length 47 [2021-08-12 19:18:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:39,252 INFO L482 AbstractCegarLoop]: Abstraction has 5380 states and 18909 transitions. [2021-08-12 19:18:39,253 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) [2021-08-12 19:18:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 18909 transitions. [2021-08-12 19:18:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:39,262 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:39,263 INFO L550 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] [2021-08-12 19:18:39,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-12 19:18:39,263 INFO L430 AbstractCegarLoop]: === Iteration 16 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash -905751946, now seen corresponding path program 16 times [2021-08-12 19:18:39,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:39,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381402350] [2021-08-12 19:18:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:39,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:39,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381402350] [2021-08-12 19:18:39,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381402350] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:39,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:39,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:39,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695243141] [2021-08-12 19:18:39,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:39,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:39,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:39,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:39,529 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) [2021-08-12 19:18:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:41,348 INFO L93 Difference]: Finished difference Result 6546 states and 22783 transitions. [2021-08-12 19:18:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-12 19:18:41,348 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 [2021-08-12 19:18:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:41,367 INFO L225 Difference]: With dead ends: 6546 [2021-08-12 19:18:41,368 INFO L226 Difference]: Without dead ends: 6449 [2021-08-12 19:18:41,371 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1026.4ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-08-12 19:18:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2021-08-12 19:18:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 5382. [2021-08-12 19:18:41,502 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) [2021-08-12 19:18:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18914 transitions. [2021-08-12 19:18:41,520 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18914 transitions. Word has length 47 [2021-08-12 19:18:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:41,520 INFO L482 AbstractCegarLoop]: Abstraction has 5382 states and 18914 transitions. [2021-08-12 19:18:41,520 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) [2021-08-12 19:18:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18914 transitions. [2021-08-12 19:18:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:41,528 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:41,528 INFO L550 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] [2021-08-12 19:18:41,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-12 19:18:41,528 INFO L430 AbstractCegarLoop]: === Iteration 17 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -606860268, now seen corresponding path program 17 times [2021-08-12 19:18:41,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:41,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913594809] [2021-08-12 19:18:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:41,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:41,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913594809] [2021-08-12 19:18:41,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913594809] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:41,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:41,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:41,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217510491] [2021-08-12 19:18:41,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:41,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:41,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:41,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:41,806 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) [2021-08-12 19:18:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:43,225 INFO L93 Difference]: Finished difference Result 5848 states and 20398 transitions. [2021-08-12 19:18:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:18:43,226 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 [2021-08-12 19:18:43,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:43,241 INFO L225 Difference]: With dead ends: 5848 [2021-08-12 19:18:43,241 INFO L226 Difference]: Without dead ends: 5749 [2021-08-12 19:18:43,243 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 847.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:18:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2021-08-12 19:18:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5388. [2021-08-12 19:18:43,384 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) [2021-08-12 19:18:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18929 transitions. [2021-08-12 19:18:43,403 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 18929 transitions. Word has length 47 [2021-08-12 19:18:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:43,403 INFO L482 AbstractCegarLoop]: Abstraction has 5388 states and 18929 transitions. [2021-08-12 19:18:43,403 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) [2021-08-12 19:18:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 18929 transitions. [2021-08-12 19:18:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:43,411 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:43,411 INFO L550 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] [2021-08-12 19:18:43,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-12 19:18:43,411 INFO L430 AbstractCegarLoop]: === Iteration 18 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1962686518, now seen corresponding path program 18 times [2021-08-12 19:18:43,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:43,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29413378] [2021-08-12 19:18:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:43,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:43,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29413378] [2021-08-12 19:18:43,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29413378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:43,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:43,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:43,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097890261] [2021-08-12 19:18:43,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:43,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:43,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:43,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:43,665 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) [2021-08-12 19:18:45,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:45,050 INFO L93 Difference]: Finished difference Result 5749 states and 20093 transitions. [2021-08-12 19:18:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:18:45,051 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 [2021-08-12 19:18:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:45,068 INFO L225 Difference]: With dead ends: 5749 [2021-08-12 19:18:45,068 INFO L226 Difference]: Without dead ends: 5644 [2021-08-12 19:18:45,070 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 792.2ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:18:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-08-12 19:18:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5376. [2021-08-12 19:18:45,278 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) [2021-08-12 19:18:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18901 transitions. [2021-08-12 19:18:45,295 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18901 transitions. Word has length 47 [2021-08-12 19:18:45,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:45,295 INFO L482 AbstractCegarLoop]: Abstraction has 5376 states and 18901 transitions. [2021-08-12 19:18:45,295 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) [2021-08-12 19:18:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18901 transitions. [2021-08-12 19:18:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:45,303 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:45,304 INFO L550 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] [2021-08-12 19:18:45,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-12 19:18:45,304 INFO L430 AbstractCegarLoop]: === Iteration 19 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:45,304 INFO L82 PathProgramCache]: Analyzing trace with hash -261669676, now seen corresponding path program 19 times [2021-08-12 19:18:45,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:45,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976159584] [2021-08-12 19:18:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:45,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:45,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976159584] [2021-08-12 19:18:45,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976159584] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:45,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:45,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:18:45,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354723585] [2021-08-12 19:18:45,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:18:45,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:45,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:18:45,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:45,570 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) [2021-08-12 19:18:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:46,880 INFO L93 Difference]: Finished difference Result 5825 states and 20347 transitions. [2021-08-12 19:18:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:18:46,881 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 [2021-08-12 19:18:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:46,898 INFO L225 Difference]: With dead ends: 5825 [2021-08-12 19:18:46,898 INFO L226 Difference]: Without dead ends: 5686 [2021-08-12 19:18:46,900 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 759.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-08-12 19:18:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-08-12 19:18:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5418. [2021-08-12 19:18:47,044 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) [2021-08-12 19:18:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19006 transitions. [2021-08-12 19:18:47,067 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19006 transitions. Word has length 47 [2021-08-12 19:18:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:47,068 INFO L482 AbstractCegarLoop]: Abstraction has 5418 states and 19006 transitions. [2021-08-12 19:18:47,068 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) [2021-08-12 19:18:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19006 transitions. [2021-08-12 19:18:47,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:47,077 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:47,078 INFO L550 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] [2021-08-12 19:18:47,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-12 19:18:47,078 INFO L430 AbstractCegarLoop]: === Iteration 20 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1070610284, now seen corresponding path program 20 times [2021-08-12 19:18:47,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:47,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280193505] [2021-08-12 19:18:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:47,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:47,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280193505] [2021-08-12 19:18:47,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280193505] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:47,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:47,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:47,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912592686] [2021-08-12 19:18:47,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:47,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:47,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:47,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:47,370 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) [2021-08-12 19:18:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:48,930 INFO L93 Difference]: Finished difference Result 5809 states and 20279 transitions. [2021-08-12 19:18:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:18:48,930 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 [2021-08-12 19:18:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:48,946 INFO L225 Difference]: With dead ends: 5809 [2021-08-12 19:18:48,946 INFO L226 Difference]: Without dead ends: 5662 [2021-08-12 19:18:48,948 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 902.0ms TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:18:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-08-12 19:18:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5394. [2021-08-12 19:18:49,090 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) [2021-08-12 19:18:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18940 transitions. [2021-08-12 19:18:49,106 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18940 transitions. Word has length 47 [2021-08-12 19:18:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:49,106 INFO L482 AbstractCegarLoop]: Abstraction has 5394 states and 18940 transitions. [2021-08-12 19:18:49,106 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) [2021-08-12 19:18:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18940 transitions. [2021-08-12 19:18:49,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:49,116 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:49,116 INFO L550 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] [2021-08-12 19:18:49,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-12 19:18:49,116 INFO L430 AbstractCegarLoop]: === Iteration 21 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash -170714506, now seen corresponding path program 21 times [2021-08-12 19:18:49,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:49,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119352964] [2021-08-12 19:18:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:49,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:49,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119352964] [2021-08-12 19:18:49,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119352964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:49,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:49,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:49,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527577911] [2021-08-12 19:18:49,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:49,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:49,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:49,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:49,397 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) [2021-08-12 19:18:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:53,663 INFO L93 Difference]: Finished difference Result 10439 states and 36986 transitions. [2021-08-12 19:18:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-08-12 19:18:53,664 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 [2021-08-12 19:18:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:53,689 INFO L225 Difference]: With dead ends: 10439 [2021-08-12 19:18:53,690 INFO L226 Difference]: Without dead ends: 10163 [2021-08-12 19:18:53,695 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2273 ImplicationChecksByTransitivity, 2320.4ms TimeCoverageRelationStatistics Valid=673, Invalid=6809, Unknown=0, NotChecked=0, Total=7482 [2021-08-12 19:18:53,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-08-12 19:18:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 6026. [2021-08-12 19:18:53,892 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) [2021-08-12 19:18:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 21148 transitions. [2021-08-12 19:18:53,913 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 21148 transitions. Word has length 47 [2021-08-12 19:18:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:53,913 INFO L482 AbstractCegarLoop]: Abstraction has 6026 states and 21148 transitions. [2021-08-12 19:18:53,913 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) [2021-08-12 19:18:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 21148 transitions. [2021-08-12 19:18:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:53,922 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:53,922 INFO L550 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] [2021-08-12 19:18:53,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-12 19:18:53,922 INFO L430 AbstractCegarLoop]: === Iteration 22 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:53,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1021366414, now seen corresponding path program 22 times [2021-08-12 19:18:53,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:53,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712338821] [2021-08-12 19:18:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:54,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:54,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712338821] [2021-08-12 19:18:54,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712338821] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:54,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:54,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:54,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279596077] [2021-08-12 19:18:54,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:54,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:54,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:54,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:54,194 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) [2021-08-12 19:18:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:58,384 INFO L93 Difference]: Finished difference Result 10393 states and 37056 transitions. [2021-08-12 19:18:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-12 19:18:58,384 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 [2021-08-12 19:18:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:58,460 INFO L225 Difference]: With dead ends: 10393 [2021-08-12 19:18:58,460 INFO L226 Difference]: Without dead ends: 10284 [2021-08-12 19:18:58,463 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 2233.1ms TimeCoverageRelationStatistics Valid=623, Invalid=6349, Unknown=0, NotChecked=0, Total=6972 [2021-08-12 19:18:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2021-08-12 19:18:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 5934. [2021-08-12 19:18:58,627 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) [2021-08-12 19:18:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5934 states to 5934 states and 20858 transitions. [2021-08-12 19:18:58,646 INFO L78 Accepts]: Start accepts. Automaton has 5934 states and 20858 transitions. Word has length 47 [2021-08-12 19:18:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:58,646 INFO L482 AbstractCegarLoop]: Abstraction has 5934 states and 20858 transitions. [2021-08-12 19:18:58,646 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) [2021-08-12 19:18:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5934 states and 20858 transitions. [2021-08-12 19:18:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:18:58,654 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:58,654 INFO L550 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] [2021-08-12 19:18:58,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-12 19:18:58,654 INFO L430 AbstractCegarLoop]: === Iteration 23 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:18:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:58,655 INFO L82 PathProgramCache]: Analyzing trace with hash 659235032, now seen corresponding path program 23 times [2021-08-12 19:18:58,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:58,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380395993] [2021-08-12 19:18:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:58,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:58,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380395993] [2021-08-12 19:18:58,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380395993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:58,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:58,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:18:58,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300012844] [2021-08-12 19:18:58,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:18:58,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:58,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:18:58,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:18:58,924 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) [2021-08-12 19:19:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:00,538 INFO L93 Difference]: Finished difference Result 6579 states and 22907 transitions. [2021-08-12 19:19:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:19:00,538 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 [2021-08-12 19:19:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:00,559 INFO L225 Difference]: With dead ends: 6579 [2021-08-12 19:19:00,560 INFO L226 Difference]: Without dead ends: 6456 [2021-08-12 19:19:00,562 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 921.4ms TimeCoverageRelationStatistics Valid=220, Invalid=2230, Unknown=0, NotChecked=0, Total=2450 [2021-08-12 19:19:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2021-08-12 19:19:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 5940. [2021-08-12 19:19:00,733 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) [2021-08-12 19:19:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20871 transitions. [2021-08-12 19:19:00,752 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20871 transitions. Word has length 47 [2021-08-12 19:19:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:00,752 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20871 transitions. [2021-08-12 19:19:00,752 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) [2021-08-12 19:19:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20871 transitions. [2021-08-12 19:19:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:00,759 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:00,760 INFO L550 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] [2021-08-12 19:19:00,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-12 19:19:00,760 INFO L430 AbstractCegarLoop]: === Iteration 24 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2064310828, now seen corresponding path program 24 times [2021-08-12 19:19:00,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:00,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278173363] [2021-08-12 19:19:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:01,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:01,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278173363] [2021-08-12 19:19:01,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278173363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:01,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:01,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:01,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374224342] [2021-08-12 19:19:01,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:01,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:01,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:01,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:01,014 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) [2021-08-12 19:19:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:02,984 INFO L93 Difference]: Finished difference Result 7067 states and 24688 transitions. [2021-08-12 19:19:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-12 19:19:02,986 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 [2021-08-12 19:19:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:03,005 INFO L225 Difference]: With dead ends: 7067 [2021-08-12 19:19:03,005 INFO L226 Difference]: Without dead ends: 6821 [2021-08-12 19:19:03,008 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1062.0ms TimeCoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-08-12 19:19:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-08-12 19:19:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5936. [2021-08-12 19:19:03,160 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) [2021-08-12 19:19:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20861 transitions. [2021-08-12 19:19:03,181 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20861 transitions. Word has length 47 [2021-08-12 19:19:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:03,181 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20861 transitions. [2021-08-12 19:19:03,181 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) [2021-08-12 19:19:03,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20861 transitions. [2021-08-12 19:19:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:03,189 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:03,189 INFO L550 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] [2021-08-12 19:19:03,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-12 19:19:03,189 INFO L430 AbstractCegarLoop]: === Iteration 25 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:03,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1765419150, now seen corresponding path program 25 times [2021-08-12 19:19:03,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:03,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052527457] [2021-08-12 19:19:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:03,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:03,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052527457] [2021-08-12 19:19:03,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052527457] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:03,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:03,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:19:03,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034067880] [2021-08-12 19:19:03,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:19:03,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:19:03,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:19:03,499 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) [2021-08-12 19:19:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:05,044 INFO L93 Difference]: Finished difference Result 6460 states and 22528 transitions. [2021-08-12 19:19:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:19:05,045 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 [2021-08-12 19:19:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:05,062 INFO L225 Difference]: With dead ends: 6460 [2021-08-12 19:19:05,062 INFO L226 Difference]: Without dead ends: 6361 [2021-08-12 19:19:05,064 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 842.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:19:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2021-08-12 19:19:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 5950. [2021-08-12 19:19:05,207 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) [2021-08-12 19:19:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20888 transitions. [2021-08-12 19:19:05,227 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20888 transitions. Word has length 47 [2021-08-12 19:19:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:05,227 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20888 transitions. [2021-08-12 19:19:05,227 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) [2021-08-12 19:19:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20888 transitions. [2021-08-12 19:19:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:05,235 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:05,235 INFO L550 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] [2021-08-12 19:19:05,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-12 19:19:05,235 INFO L430 AbstractCegarLoop]: === Iteration 26 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash 804127636, now seen corresponding path program 26 times [2021-08-12 19:19:05,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:05,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159307158] [2021-08-12 19:19:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:05,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:05,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159307158] [2021-08-12 19:19:05,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159307158] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:05,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:05,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:05,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748148753] [2021-08-12 19:19:05,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:05,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:05,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:05,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:05,502 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) [2021-08-12 19:19:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:07,074 INFO L93 Difference]: Finished difference Result 6361 states and 22223 transitions. [2021-08-12 19:19:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:19:07,074 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 [2021-08-12 19:19:07,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:07,091 INFO L225 Difference]: With dead ends: 6361 [2021-08-12 19:19:07,091 INFO L226 Difference]: Without dead ends: 6242 [2021-08-12 19:19:07,092 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 809.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:19:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2021-08-12 19:19:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 5924. [2021-08-12 19:19:07,234 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) [2021-08-12 19:19:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 20823 transitions. [2021-08-12 19:19:07,252 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 20823 transitions. Word has length 47 [2021-08-12 19:19:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:07,252 INFO L482 AbstractCegarLoop]: Abstraction has 5924 states and 20823 transitions. [2021-08-12 19:19:07,252 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) [2021-08-12 19:19:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 20823 transitions. [2021-08-12 19:19:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:07,259 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:07,260 INFO L550 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] [2021-08-12 19:19:07,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-12 19:19:07,260 INFO L430 AbstractCegarLoop]: === Iteration 27 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:07,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash -234197158, now seen corresponding path program 27 times [2021-08-12 19:19:07,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:07,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093857513] [2021-08-12 19:19:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:07,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:07,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093857513] [2021-08-12 19:19:07,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093857513] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:07,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:07,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:07,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73922540] [2021-08-12 19:19:07,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:07,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:07,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:07,531 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) [2021-08-12 19:19:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:09,088 INFO L93 Difference]: Finished difference Result 6595 states and 23084 transitions. [2021-08-12 19:19:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:19:09,088 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 [2021-08-12 19:19:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:09,110 INFO L225 Difference]: With dead ends: 6595 [2021-08-12 19:19:09,110 INFO L226 Difference]: Without dead ends: 6466 [2021-08-12 19:19:09,113 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 842.2ms TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2021-08-12 19:19:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-08-12 19:19:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 5944. [2021-08-12 19:19:09,275 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) [2021-08-12 19:19:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20881 transitions. [2021-08-12 19:19:09,298 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20881 transitions. Word has length 47 [2021-08-12 19:19:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:09,298 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20881 transitions. [2021-08-12 19:19:09,298 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) [2021-08-12 19:19:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20881 transitions. [2021-08-12 19:19:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:09,306 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:09,306 INFO L550 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] [2021-08-12 19:19:09,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-12 19:19:09,306 INFO L430 AbstractCegarLoop]: === Iteration 28 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:09,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1017451496, now seen corresponding path program 28 times [2021-08-12 19:19:09,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:09,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042060463] [2021-08-12 19:19:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:09,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:09,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042060463] [2021-08-12 19:19:09,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042060463] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:09,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:09,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:09,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330350318] [2021-08-12 19:19:09,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:09,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:09,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:09,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:09,568 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) [2021-08-12 19:19:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:12,159 INFO L93 Difference]: Finished difference Result 9240 states and 32606 transitions. [2021-08-12 19:19:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-12 19:19:12,159 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 [2021-08-12 19:19:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:12,187 INFO L225 Difference]: With dead ends: 9240 [2021-08-12 19:19:12,187 INFO L226 Difference]: Without dead ends: 9149 [2021-08-12 19:19:12,190 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1233.3ms TimeCoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2021-08-12 19:19:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2021-08-12 19:19:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 5968. [2021-08-12 19:19:12,374 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) [2021-08-12 19:19:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 20955 transitions. [2021-08-12 19:19:12,396 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 20955 transitions. Word has length 47 [2021-08-12 19:19:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:12,396 INFO L482 AbstractCegarLoop]: Abstraction has 5968 states and 20955 transitions. [2021-08-12 19:19:12,396 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) [2021-08-12 19:19:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 20955 transitions. [2021-08-12 19:19:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:12,452 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:12,452 INFO L550 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] [2021-08-12 19:19:12,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-12 19:19:12,452 INFO L430 AbstractCegarLoop]: === Iteration 29 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1868103404, now seen corresponding path program 29 times [2021-08-12 19:19:12,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:12,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288497881] [2021-08-12 19:19:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:12,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:12,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288497881] [2021-08-12 19:19:12,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288497881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:12,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:12,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:12,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178171301] [2021-08-12 19:19:12,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:12,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:12,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:12,730 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) [2021-08-12 19:19:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:15,417 INFO L93 Difference]: Finished difference Result 9724 states and 34562 transitions. [2021-08-12 19:19:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-12 19:19:15,418 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 [2021-08-12 19:19:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:15,442 INFO L225 Difference]: With dead ends: 9724 [2021-08-12 19:19:15,442 INFO L226 Difference]: Without dead ends: 9619 [2021-08-12 19:19:15,443 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1273.1ms TimeCoverageRelationStatistics Valid=332, Invalid=3450, Unknown=0, NotChecked=0, Total=3782 [2021-08-12 19:19:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-08-12 19:19:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5948. [2021-08-12 19:19:15,640 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) [2021-08-12 19:19:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20903 transitions. [2021-08-12 19:19:15,667 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20903 transitions. Word has length 47 [2021-08-12 19:19:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:15,668 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20903 transitions. [2021-08-12 19:19:15,668 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) [2021-08-12 19:19:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20903 transitions. [2021-08-12 19:19:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:15,677 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:15,677 INFO L550 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] [2021-08-12 19:19:15,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-12 19:19:15,677 INFO L430 AbstractCegarLoop]: === Iteration 30 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:15,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:15,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1307726200, now seen corresponding path program 30 times [2021-08-12 19:19:15,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:15,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725041170] [2021-08-12 19:19:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:15,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:15,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725041170] [2021-08-12 19:19:15,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725041170] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:15,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:15,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:15,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834814965] [2021-08-12 19:19:15,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:15,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:15,931 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) [2021-08-12 19:19:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:17,434 INFO L93 Difference]: Finished difference Result 6449 states and 22513 transitions. [2021-08-12 19:19:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:19:17,434 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 [2021-08-12 19:19:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:17,452 INFO L225 Difference]: With dead ends: 6449 [2021-08-12 19:19:17,452 INFO L226 Difference]: Without dead ends: 6320 [2021-08-12 19:19:17,454 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 772.3ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:19:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-08-12 19:19:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 5960. [2021-08-12 19:19:17,603 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) [2021-08-12 19:19:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20933 transitions. [2021-08-12 19:19:17,623 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20933 transitions. Word has length 47 [2021-08-12 19:19:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:17,623 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20933 transitions. [2021-08-12 19:19:17,623 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) [2021-08-12 19:19:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20933 transitions. [2021-08-12 19:19:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:17,632 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:17,632 INFO L550 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] [2021-08-12 19:19:17,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-12 19:19:17,632 INFO L430 AbstractCegarLoop]: === Iteration 31 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1159869836, now seen corresponding path program 31 times [2021-08-12 19:19:17,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:17,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835192287] [2021-08-12 19:19:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:17,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:17,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835192287] [2021-08-12 19:19:17,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835192287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:17,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:17,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:17,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590769289] [2021-08-12 19:19:17,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:17,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:17,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:17,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:17,952 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) [2021-08-12 19:19:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:19,621 INFO L93 Difference]: Finished difference Result 6522 states and 22723 transitions. [2021-08-12 19:19:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:19:19,621 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 [2021-08-12 19:19:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:19,642 INFO L225 Difference]: With dead ends: 6522 [2021-08-12 19:19:19,642 INFO L226 Difference]: Without dead ends: 6423 [2021-08-12 19:19:19,645 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 912.0ms TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2021-08-12 19:19:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2021-08-12 19:19:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 5966. [2021-08-12 19:19:19,812 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) [2021-08-12 19:19:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20948 transitions. [2021-08-12 19:19:19,835 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20948 transitions. Word has length 47 [2021-08-12 19:19:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:19,836 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20948 transitions. [2021-08-12 19:19:19,836 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) [2021-08-12 19:19:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20948 transitions. [2021-08-12 19:19:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:19,844 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:19,844 INFO L550 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] [2021-08-12 19:19:19,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-12 19:19:19,845 INFO L430 AbstractCegarLoop]: === Iteration 32 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:19,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1157196010, now seen corresponding path program 32 times [2021-08-12 19:19:19,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:19,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041296068] [2021-08-12 19:19:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:20,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:20,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041296068] [2021-08-12 19:19:20,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041296068] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:20,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:20,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:20,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759786362] [2021-08-12 19:19:20,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:20,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:20,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:20,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:20,102 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) [2021-08-12 19:19:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:21,663 INFO L93 Difference]: Finished difference Result 6419 states and 22410 transitions. [2021-08-12 19:19:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:19:21,663 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 [2021-08-12 19:19:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:21,679 INFO L225 Difference]: With dead ends: 6419 [2021-08-12 19:19:21,680 INFO L226 Difference]: Without dead ends: 6308 [2021-08-12 19:19:21,681 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 798.0ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-08-12 19:19:21,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2021-08-12 19:19:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5948. [2021-08-12 19:19:21,845 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) [2021-08-12 19:19:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20899 transitions. [2021-08-12 19:19:21,868 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20899 transitions. Word has length 47 [2021-08-12 19:19:21,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:21,868 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20899 transitions. [2021-08-12 19:19:21,868 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) [2021-08-12 19:19:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20899 transitions. [2021-08-12 19:19:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:21,877 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:21,877 INFO L550 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] [2021-08-12 19:19:21,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-12 19:19:21,877 INFO L430 AbstractCegarLoop]: === Iteration 33 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1898173416, now seen corresponding path program 33 times [2021-08-12 19:19:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:21,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646652812] [2021-08-12 19:19:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:22,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:22,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646652812] [2021-08-12 19:19:22,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646652812] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:22,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:22,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:22,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156138570] [2021-08-12 19:19:22,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:22,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:22,140 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) [2021-08-12 19:19:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:23,857 INFO L93 Difference]: Finished difference Result 6611 states and 23001 transitions. [2021-08-12 19:19:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-12 19:19:23,858 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 [2021-08-12 19:19:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:23,876 INFO L225 Difference]: With dead ends: 6611 [2021-08-12 19:19:23,876 INFO L226 Difference]: Without dead ends: 6488 [2021-08-12 19:19:23,878 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 929.2ms TimeCoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2021-08-12 19:19:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-08-12 19:19:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5954. [2021-08-12 19:19:24,046 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) [2021-08-12 19:19:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 20912 transitions. [2021-08-12 19:19:24,064 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 20912 transitions. Word has length 47 [2021-08-12 19:19:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:24,064 INFO L482 AbstractCegarLoop]: Abstraction has 5954 states and 20912 transitions. [2021-08-12 19:19:24,065 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) [2021-08-12 19:19:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 20912 transitions. [2021-08-12 19:19:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:24,072 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:24,072 INFO L550 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] [2021-08-12 19:19:24,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-12 19:19:24,072 INFO L430 AbstractCegarLoop]: === Iteration 34 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash -326751980, now seen corresponding path program 34 times [2021-08-12 19:19:24,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:24,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110553323] [2021-08-12 19:19:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:24,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:24,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110553323] [2021-08-12 19:19:24,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110553323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:24,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:24,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:24,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777417367] [2021-08-12 19:19:24,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:24,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:24,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:24,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:24,346 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) [2021-08-12 19:19:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:26,656 INFO L93 Difference]: Finished difference Result 7880 states and 27550 transitions. [2021-08-12 19:19:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-12 19:19:26,657 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 [2021-08-12 19:19:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:26,681 INFO L225 Difference]: With dead ends: 7880 [2021-08-12 19:19:26,681 INFO L226 Difference]: Without dead ends: 7783 [2021-08-12 19:19:26,683 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1102.4ms TimeCoverageRelationStatistics Valid=293, Invalid=3129, Unknown=0, NotChecked=0, Total=3422 [2021-08-12 19:19:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2021-08-12 19:19:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 5944. [2021-08-12 19:19:26,855 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) [2021-08-12 19:19:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20885 transitions. [2021-08-12 19:19:26,873 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20885 transitions. Word has length 47 [2021-08-12 19:19:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:26,873 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20885 transitions. [2021-08-12 19:19:26,873 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) [2021-08-12 19:19:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20885 transitions. [2021-08-12 19:19:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:26,881 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:26,881 INFO L550 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] [2021-08-12 19:19:26,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-12 19:19:26,881 INFO L430 AbstractCegarLoop]: === Iteration 35 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:26,881 INFO L82 PathProgramCache]: Analyzing trace with hash -27860302, now seen corresponding path program 35 times [2021-08-12 19:19:26,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:26,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164140320] [2021-08-12 19:19:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:27,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:27,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164140320] [2021-08-12 19:19:27,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164140320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:27,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:27,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:27,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114422886] [2021-08-12 19:19:27,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:27,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:27,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:27,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:27,133 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) [2021-08-12 19:19:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:28,875 INFO L93 Difference]: Finished difference Result 6607 states and 22977 transitions. [2021-08-12 19:19:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-12 19:19:28,885 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 [2021-08-12 19:19:28,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:28,908 INFO L225 Difference]: With dead ends: 6607 [2021-08-12 19:19:28,908 INFO L226 Difference]: Without dead ends: 6508 [2021-08-12 19:19:28,911 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 959.5ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-08-12 19:19:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-08-12 19:19:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 5952. [2021-08-12 19:19:29,122 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) [2021-08-12 19:19:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20903 transitions. [2021-08-12 19:19:29,142 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20903 transitions. Word has length 47 [2021-08-12 19:19:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:29,142 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20903 transitions. [2021-08-12 19:19:29,142 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) [2021-08-12 19:19:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20903 transitions. [2021-08-12 19:19:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:29,151 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:29,151 INFO L550 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] [2021-08-12 19:19:29,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-12 19:19:29,151 INFO L430 AbstractCegarLoop]: === Iteration 36 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:29,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1753280812, now seen corresponding path program 36 times [2021-08-12 19:19:29,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:29,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763520189] [2021-08-12 19:19:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:29,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:29,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763520189] [2021-08-12 19:19:29,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763520189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:29,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:29,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:29,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571771522] [2021-08-12 19:19:29,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:29,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:29,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:29,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:29,418 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) [2021-08-12 19:19:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:31,097 INFO L93 Difference]: Finished difference Result 6504 states and 22664 transitions. [2021-08-12 19:19:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-12 19:19:31,098 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 [2021-08-12 19:19:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:31,118 INFO L225 Difference]: With dead ends: 6504 [2021-08-12 19:19:31,118 INFO L226 Difference]: Without dead ends: 6399 [2021-08-12 19:19:31,120 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 897.0ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:19:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-08-12 19:19:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5940. [2021-08-12 19:19:31,277 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) [2021-08-12 19:19:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20875 transitions. [2021-08-12 19:19:31,299 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20875 transitions. Word has length 47 [2021-08-12 19:19:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:31,299 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20875 transitions. [2021-08-12 19:19:31,299 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) [2021-08-12 19:19:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20875 transitions. [2021-08-12 19:19:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:31,308 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:31,308 INFO L550 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] [2021-08-12 19:19:31,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-12 19:19:31,308 INFO L430 AbstractCegarLoop]: === Iteration 37 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash 392123308, now seen corresponding path program 37 times [2021-08-12 19:19:31,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:31,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203461477] [2021-08-12 19:19:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:31,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:31,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203461477] [2021-08-12 19:19:31,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203461477] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:31,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:31,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:31,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496430898] [2021-08-12 19:19:31,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:31,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:31,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:31,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:31,611 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) [2021-08-12 19:19:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:33,175 INFO L93 Difference]: Finished difference Result 6363 states and 22244 transitions. [2021-08-12 19:19:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:19:33,175 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 [2021-08-12 19:19:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:33,196 INFO L225 Difference]: With dead ends: 6363 [2021-08-12 19:19:33,196 INFO L226 Difference]: Without dead ends: 6234 [2021-08-12 19:19:33,199 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 809.8ms TimeCoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:19:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-08-12 19:19:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5976. [2021-08-12 19:19:33,364 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) [2021-08-12 19:19:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20989 transitions. [2021-08-12 19:19:33,383 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20989 transitions. Word has length 47 [2021-08-12 19:19:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:33,383 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20989 transitions. [2021-08-12 19:19:33,383 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) [2021-08-12 19:19:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20989 transitions. [2021-08-12 19:19:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:33,390 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:33,390 INFO L550 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] [2021-08-12 19:19:33,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-12 19:19:33,390 INFO L430 AbstractCegarLoop]: === Iteration 38 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:33,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2075472728, now seen corresponding path program 38 times [2021-08-12 19:19:33,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:33,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894081425] [2021-08-12 19:19:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:33,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:33,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894081425] [2021-08-12 19:19:33,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894081425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:33,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:33,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:33,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265316449] [2021-08-12 19:19:33,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:33,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:33,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:33,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:33,663 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) [2021-08-12 19:19:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:35,269 INFO L93 Difference]: Finished difference Result 6442 states and 22473 transitions. [2021-08-12 19:19:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-12 19:19:35,269 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 [2021-08-12 19:19:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:35,289 INFO L225 Difference]: With dead ends: 6442 [2021-08-12 19:19:35,289 INFO L226 Difference]: Without dead ends: 6343 [2021-08-12 19:19:35,291 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 832.0ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:19:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2021-08-12 19:19:35,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 5982. [2021-08-12 19:19:35,455 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) [2021-08-12 19:19:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 21004 transitions. [2021-08-12 19:19:35,475 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 21004 transitions. Word has length 47 [2021-08-12 19:19:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:35,476 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 21004 transitions. [2021-08-12 19:19:35,476 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) [2021-08-12 19:19:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 21004 transitions. [2021-08-12 19:19:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:35,484 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:35,484 INFO L550 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] [2021-08-12 19:19:35,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-12 19:19:35,484 INFO L430 AbstractCegarLoop]: === Iteration 39 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:35,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2072798902, now seen corresponding path program 39 times [2021-08-12 19:19:35,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:35,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719346118] [2021-08-12 19:19:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:35,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:35,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719346118] [2021-08-12 19:19:35,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719346118] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:35,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:35,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:35,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836718336] [2021-08-12 19:19:35,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:35,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:35,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:35,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:35,750 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) [2021-08-12 19:19:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:37,262 INFO L93 Difference]: Finished difference Result 6333 states and 22141 transitions. [2021-08-12 19:19:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:19:37,262 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 [2021-08-12 19:19:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:37,278 INFO L225 Difference]: With dead ends: 6333 [2021-08-12 19:19:37,279 INFO L226 Difference]: Without dead ends: 6222 [2021-08-12 19:19:37,279 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 778.7ms TimeCoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:19:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6222 states. [2021-08-12 19:19:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6222 to 5964. [2021-08-12 19:19:37,441 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) [2021-08-12 19:19:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 20947 transitions. [2021-08-12 19:19:37,462 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 20947 transitions. Word has length 47 [2021-08-12 19:19:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:37,462 INFO L482 AbstractCegarLoop]: Abstraction has 5964 states and 20947 transitions. [2021-08-12 19:19:37,462 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) [2021-08-12 19:19:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 20947 transitions. [2021-08-12 19:19:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:37,471 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:37,471 INFO L550 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] [2021-08-12 19:19:37,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-12 19:19:37,471 INFO L430 AbstractCegarLoop]: === Iteration 40 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1973112992, now seen corresponding path program 40 times [2021-08-12 19:19:37,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:37,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47105759] [2021-08-12 19:19:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:37,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:37,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47105759] [2021-08-12 19:19:37,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47105759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:37,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:37,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:19:37,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558687177] [2021-08-12 19:19:37,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:19:37,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:19:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:19:37,716 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) [2021-08-12 19:19:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:39,237 INFO L93 Difference]: Finished difference Result 6403 states and 22404 transitions. [2021-08-12 19:19:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:19:39,237 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 [2021-08-12 19:19:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:39,256 INFO L225 Difference]: With dead ends: 6403 [2021-08-12 19:19:39,256 INFO L226 Difference]: Without dead ends: 6256 [2021-08-12 19:19:39,258 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 764.0ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:19:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-08-12 19:19:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5976. [2021-08-12 19:19:39,418 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) [2021-08-12 19:19:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 20977 transitions. [2021-08-12 19:19:39,437 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 20977 transitions. Word has length 47 [2021-08-12 19:19:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:39,437 INFO L482 AbstractCegarLoop]: Abstraction has 5976 states and 20977 transitions. [2021-08-12 19:19:39,438 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) [2021-08-12 19:19:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 20977 transitions. [2021-08-12 19:19:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:39,447 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:39,447 INFO L550 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] [2021-08-12 19:19:39,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-12 19:19:39,448 INFO L430 AbstractCegarLoop]: === Iteration 41 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:39,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1255583042, now seen corresponding path program 41 times [2021-08-12 19:19:39,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:39,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353488116] [2021-08-12 19:19:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:39,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:39,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353488116] [2021-08-12 19:19:39,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353488116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:39,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:39,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:39,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405133729] [2021-08-12 19:19:39,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:39,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:39,699 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) [2021-08-12 19:19:41,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:41,346 INFO L93 Difference]: Finished difference Result 6424 states and 22408 transitions. [2021-08-12 19:19:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-12 19:19:41,346 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 [2021-08-12 19:19:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:41,365 INFO L225 Difference]: With dead ends: 6424 [2021-08-12 19:19:41,365 INFO L226 Difference]: Without dead ends: 6325 [2021-08-12 19:19:41,368 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 859.0ms TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:19:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-08-12 19:19:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5982. [2021-08-12 19:19:41,532 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) [2021-08-12 19:19:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5982 states to 5982 states and 20992 transitions. [2021-08-12 19:19:41,550 INFO L78 Accepts]: Start accepts. Automaton has 5982 states and 20992 transitions. Word has length 47 [2021-08-12 19:19:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:41,551 INFO L482 AbstractCegarLoop]: Abstraction has 5982 states and 20992 transitions. [2021-08-12 19:19:41,551 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) [2021-08-12 19:19:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5982 states and 20992 transitions. [2021-08-12 19:19:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:41,558 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:41,558 INFO L550 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] [2021-08-12 19:19:41,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-12 19:19:41,558 INFO L430 AbstractCegarLoop]: === Iteration 42 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:41,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1252909216, now seen corresponding path program 42 times [2021-08-12 19:19:41,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:41,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421910522] [2021-08-12 19:19:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:41,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:41,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421910522] [2021-08-12 19:19:41,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421910522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:41,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:41,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:41,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036604762] [2021-08-12 19:19:41,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:41,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:41,819 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) [2021-08-12 19:19:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:43,292 INFO L93 Difference]: Finished difference Result 6309 states and 22055 transitions. [2021-08-12 19:19:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:19:43,292 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 [2021-08-12 19:19:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:43,310 INFO L225 Difference]: With dead ends: 6309 [2021-08-12 19:19:43,310 INFO L226 Difference]: Without dead ends: 6174 [2021-08-12 19:19:43,312 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 739.8ms TimeCoverageRelationStatistics Valid=180, Invalid=1712, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:19:43,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2021-08-12 19:19:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 5940. [2021-08-12 19:19:43,483 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) [2021-08-12 19:19:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 20867 transitions. [2021-08-12 19:19:43,502 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 20867 transitions. Word has length 47 [2021-08-12 19:19:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:43,502 INFO L482 AbstractCegarLoop]: Abstraction has 5940 states and 20867 transitions. [2021-08-12 19:19:43,502 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) [2021-08-12 19:19:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 20867 transitions. [2021-08-12 19:19:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:43,510 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:43,510 INFO L550 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] [2021-08-12 19:19:43,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-12 19:19:43,510 INFO L430 AbstractCegarLoop]: === Iteration 43 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash -439671468, now seen corresponding path program 43 times [2021-08-12 19:19:43,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:43,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329733836] [2021-08-12 19:19:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:43,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:43,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329733836] [2021-08-12 19:19:43,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329733836] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:43,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:43,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:43,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154211566] [2021-08-12 19:19:43,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:43,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:43,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:43,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:43,772 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) [2021-08-12 19:19:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:45,445 INFO L93 Difference]: Finished difference Result 6588 states and 23008 transitions. [2021-08-12 19:19:45,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-12 19:19:45,446 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 [2021-08-12 19:19:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:45,470 INFO L225 Difference]: With dead ends: 6588 [2021-08-12 19:19:45,470 INFO L226 Difference]: Without dead ends: 6401 [2021-08-12 19:19:45,472 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 902.2ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-08-12 19:19:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2021-08-12 19:19:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 5944. [2021-08-12 19:19:45,680 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) [2021-08-12 19:19:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 20877 transitions. [2021-08-12 19:19:45,705 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 20877 transitions. Word has length 47 [2021-08-12 19:19:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:45,705 INFO L482 AbstractCegarLoop]: Abstraction has 5944 states and 20877 transitions. [2021-08-12 19:19:45,706 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) [2021-08-12 19:19:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 20877 transitions. [2021-08-12 19:19:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:45,715 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:45,716 INFO L550 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] [2021-08-12 19:19:45,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-12 19:19:45,716 INFO L430 AbstractCegarLoop]: === Iteration 44 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash -557163210, now seen corresponding path program 44 times [2021-08-12 19:19:45,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:45,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239630500] [2021-08-12 19:19:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:46,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:46,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239630500] [2021-08-12 19:19:46,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239630500] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:46,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:46,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:46,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713090676] [2021-08-12 19:19:46,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:46,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:46,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:46,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:46,013 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) [2021-08-12 19:19:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:47,687 INFO L93 Difference]: Finished difference Result 6680 states and 23211 transitions. [2021-08-12 19:19:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-12 19:19:47,687 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 [2021-08-12 19:19:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:47,705 INFO L225 Difference]: With dead ends: 6680 [2021-08-12 19:19:47,705 INFO L226 Difference]: Without dead ends: 6541 [2021-08-12 19:19:47,707 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 954.8ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-08-12 19:19:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2021-08-12 19:19:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 5950. [2021-08-12 19:19:47,906 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) [2021-08-12 19:19:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 20890 transitions. [2021-08-12 19:19:47,925 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 20890 transitions. Word has length 47 [2021-08-12 19:19:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:47,925 INFO L482 AbstractCegarLoop]: Abstraction has 5950 states and 20890 transitions. [2021-08-12 19:19:47,925 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) [2021-08-12 19:19:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 20890 transitions. [2021-08-12 19:19:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:47,937 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:47,937 INFO L550 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] [2021-08-12 19:19:47,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-12 19:19:47,937 INFO L430 AbstractCegarLoop]: === Iteration 45 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:47,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1014258226, now seen corresponding path program 45 times [2021-08-12 19:19:47,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:47,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007866878] [2021-08-12 19:19:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:48,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:48,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007866878] [2021-08-12 19:19:48,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007866878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:48,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:48,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:48,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662106062] [2021-08-12 19:19:48,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:48,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:48,268 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) [2021-08-12 19:19:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:51,561 INFO L93 Difference]: Finished difference Result 9990 states and 35007 transitions. [2021-08-12 19:19:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-12 19:19:51,561 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 [2021-08-12 19:19:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:51,586 INFO L225 Difference]: With dead ends: 9990 [2021-08-12 19:19:51,587 INFO L226 Difference]: Without dead ends: 9893 [2021-08-12 19:19:51,589 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1442.8ms TimeCoverageRelationStatistics Valid=394, Invalid=4718, Unknown=0, NotChecked=0, Total=5112 [2021-08-12 19:19:51,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-08-12 19:19:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5948. [2021-08-12 19:19:51,783 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) [2021-08-12 19:19:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20891 transitions. [2021-08-12 19:19:51,805 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20891 transitions. Word has length 47 [2021-08-12 19:19:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:51,806 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20891 transitions. [2021-08-12 19:19:51,806 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) [2021-08-12 19:19:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20891 transitions. [2021-08-12 19:19:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:51,814 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:51,814 INFO L550 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] [2021-08-12 19:19:51,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-12 19:19:51,814 INFO L430 AbstractCegarLoop]: === Iteration 46 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1313149904, now seen corresponding path program 46 times [2021-08-12 19:19:51,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:51,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900925565] [2021-08-12 19:19:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:52,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:52,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900925565] [2021-08-12 19:19:52,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900925565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:52,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:52,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:52,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909657346] [2021-08-12 19:19:52,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:52,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:52,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:52,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:52,088 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) [2021-08-12 19:19:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:53,852 INFO L93 Difference]: Finished difference Result 6581 states and 22908 transitions. [2021-08-12 19:19:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-12 19:19:53,853 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 [2021-08-12 19:19:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:53,870 INFO L225 Difference]: With dead ends: 6581 [2021-08-12 19:19:53,871 INFO L226 Difference]: Without dead ends: 6482 [2021-08-12 19:19:53,872 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 951.7ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-08-12 19:19:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-08-12 19:19:54,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 5956. [2021-08-12 19:19:54,044 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) [2021-08-12 19:19:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20909 transitions. [2021-08-12 19:19:54,062 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20909 transitions. Word has length 47 [2021-08-12 19:19:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:54,062 INFO L482 AbstractCegarLoop]: Abstraction has 5956 states and 20909 transitions. [2021-08-12 19:19:54,062 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) [2021-08-12 19:19:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20909 transitions. [2021-08-12 19:19:54,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:54,069 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:54,069 INFO L550 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] [2021-08-12 19:19:54,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-12 19:19:54,069 INFO L430 AbstractCegarLoop]: === Iteration 47 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:54,070 INFO L82 PathProgramCache]: Analyzing trace with hash -412270606, now seen corresponding path program 47 times [2021-08-12 19:19:54,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:54,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391941342] [2021-08-12 19:19:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:54,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:54,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391941342] [2021-08-12 19:19:54,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391941342] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:54,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:54,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:54,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925903752] [2021-08-12 19:19:54,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:54,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:54,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:54,347 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) [2021-08-12 19:19:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:55,953 INFO L93 Difference]: Finished difference Result 6466 states and 22555 transitions. [2021-08-12 19:19:55,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:19:55,953 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 [2021-08-12 19:19:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:55,972 INFO L225 Difference]: With dead ends: 6466 [2021-08-12 19:19:55,973 INFO L226 Difference]: Without dead ends: 6365 [2021-08-12 19:19:55,974 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 874.8ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:19:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6365 states. [2021-08-12 19:19:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6365 to 5948. [2021-08-12 19:19:56,142 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) [2021-08-12 19:19:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20889 transitions. [2021-08-12 19:19:56,159 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20889 transitions. Word has length 47 [2021-08-12 19:19:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:56,159 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20889 transitions. [2021-08-12 19:19:56,159 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) [2021-08-12 19:19:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20889 transitions. [2021-08-12 19:19:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:56,167 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:56,167 INFO L550 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] [2021-08-12 19:19:56,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-12 19:19:56,167 INFO L430 AbstractCegarLoop]: === Iteration 48 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash 663473958, now seen corresponding path program 48 times [2021-08-12 19:19:56,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:56,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603503744] [2021-08-12 19:19:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:56,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:56,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603503744] [2021-08-12 19:19:56,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603503744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:56,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:56,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:19:56,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197894609] [2021-08-12 19:19:56,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:19:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:56,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:19:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:19:56,456 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) [2021-08-12 19:19:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:19:58,163 INFO L93 Difference]: Finished difference Result 6387 states and 22346 transitions. [2021-08-12 19:19:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:19:58,163 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 [2021-08-12 19:19:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:19:58,182 INFO L225 Difference]: With dead ends: 6387 [2021-08-12 19:19:58,182 INFO L226 Difference]: Without dead ends: 6240 [2021-08-12 19:19:58,184 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 863.6ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:19:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2021-08-12 19:19:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5960. [2021-08-12 19:19:58,420 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) [2021-08-12 19:19:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 20919 transitions. [2021-08-12 19:19:58,440 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 20919 transitions. Word has length 47 [2021-08-12 19:19:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:58,441 INFO L482 AbstractCegarLoop]: Abstraction has 5960 states and 20919 transitions. [2021-08-12 19:19:58,441 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) [2021-08-12 19:19:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 20919 transitions. [2021-08-12 19:19:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:19:58,450 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:58,450 INFO L550 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] [2021-08-12 19:19:58,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-12 19:19:58,451 INFO L430 AbstractCegarLoop]: === Iteration 49 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:19:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:58,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1279978748, now seen corresponding path program 49 times [2021-08-12 19:19:58,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:58,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767493410] [2021-08-12 19:19:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:58,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:58,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767493410] [2021-08-12 19:19:58,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767493410] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:58,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:58,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:19:58,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436239585] [2021-08-12 19:19:58,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:19:58,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:58,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:19:58,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:19:58,756 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) [2021-08-12 19:20:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:00,391 INFO L93 Difference]: Finished difference Result 6408 states and 22350 transitions. [2021-08-12 19:20:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:20:00,391 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 [2021-08-12 19:20:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:00,413 INFO L225 Difference]: With dead ends: 6408 [2021-08-12 19:20:00,413 INFO L226 Difference]: Without dead ends: 6309 [2021-08-12 19:20:00,415 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 875.2ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:20:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2021-08-12 19:20:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5966. [2021-08-12 19:20:00,605 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) [2021-08-12 19:20:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 20934 transitions. [2021-08-12 19:20:00,625 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 20934 transitions. Word has length 47 [2021-08-12 19:20:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:00,625 INFO L482 AbstractCegarLoop]: Abstraction has 5966 states and 20934 transitions. [2021-08-12 19:20:00,625 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) [2021-08-12 19:20:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 20934 transitions. [2021-08-12 19:20:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:00,633 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:00,633 INFO L550 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] [2021-08-12 19:20:00,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-12 19:20:00,633 INFO L430 AbstractCegarLoop]: === Iteration 50 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:00,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:00,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1289568038, now seen corresponding path program 50 times [2021-08-12 19:20:00,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:00,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67435742] [2021-08-12 19:20:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:00,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:00,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67435742] [2021-08-12 19:20:00,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67435742] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:00,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:00,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:00,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307227339] [2021-08-12 19:20:00,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:00,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:00,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:00,884 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) [2021-08-12 19:20:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:02,448 INFO L93 Difference]: Finished difference Result 6293 states and 21997 transitions. [2021-08-12 19:20:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:20:02,448 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 [2021-08-12 19:20:02,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:02,470 INFO L225 Difference]: With dead ends: 6293 [2021-08-12 19:20:02,470 INFO L226 Difference]: Without dead ends: 6170 [2021-08-12 19:20:02,472 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 741.5ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:20:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-08-12 19:20:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5936. [2021-08-12 19:20:02,657 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) [2021-08-12 19:20:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20857 transitions. [2021-08-12 19:20:02,678 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20857 transitions. Word has length 47 [2021-08-12 19:20:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:02,679 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20857 transitions. [2021-08-12 19:20:02,679 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) [2021-08-12 19:20:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20857 transitions. [2021-08-12 19:20:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:02,688 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:02,688 INFO L550 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] [2021-08-12 19:20:02,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-12 19:20:02,688 INFO L430 AbstractCegarLoop]: === Iteration 51 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1335783944, now seen corresponding path program 51 times [2021-08-12 19:20:02,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:02,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609684302] [2021-08-12 19:20:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:02,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:02,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609684302] [2021-08-12 19:20:02,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609684302] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:02,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:02,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:20:02,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326426153] [2021-08-12 19:20:02,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:20:02,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:02,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:20:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:20:02,905 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) [2021-08-12 19:20:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:04,353 INFO L93 Difference]: Finished difference Result 6491 states and 22678 transitions. [2021-08-12 19:20:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:20:04,354 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 [2021-08-12 19:20:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:04,375 INFO L225 Difference]: With dead ends: 6491 [2021-08-12 19:20:04,375 INFO L226 Difference]: Without dead ends: 6352 [2021-08-12 19:20:04,377 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 624.7ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-08-12 19:20:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-08-12 19:20:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 5952. [2021-08-12 19:20:04,562 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) [2021-08-12 19:20:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20911 transitions. [2021-08-12 19:20:04,581 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20911 transitions. Word has length 47 [2021-08-12 19:20:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:04,582 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20911 transitions. [2021-08-12 19:20:04,582 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) [2021-08-12 19:20:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20911 transitions. [2021-08-12 19:20:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:04,590 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:04,590 INFO L550 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] [2021-08-12 19:20:04,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-12 19:20:04,590 INFO L430 AbstractCegarLoop]: === Iteration 52 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:04,590 INFO L82 PathProgramCache]: Analyzing trace with hash 526843336, now seen corresponding path program 52 times [2021-08-12 19:20:04,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:04,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435821769] [2021-08-12 19:20:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:04,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:04,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435821769] [2021-08-12 19:20:04,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435821769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:04,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:04,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:20:04,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41663773] [2021-08-12 19:20:04,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:20:04,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:20:04,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:20:04,883 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) [2021-08-12 19:20:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:06,519 INFO L93 Difference]: Finished difference Result 6475 states and 22622 transitions. [2021-08-12 19:20:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:20:06,520 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 [2021-08-12 19:20:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:06,540 INFO L225 Difference]: With dead ends: 6475 [2021-08-12 19:20:06,540 INFO L226 Difference]: Without dead ends: 6328 [2021-08-12 19:20:06,542 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 796.8ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-08-12 19:20:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-08-12 19:20:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6016. [2021-08-12 19:20:06,744 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) [2021-08-12 19:20:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 21103 transitions. [2021-08-12 19:20:06,766 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 21103 transitions. Word has length 47 [2021-08-12 19:20:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:06,766 INFO L482 AbstractCegarLoop]: Abstraction has 6016 states and 21103 transitions. [2021-08-12 19:20:06,766 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) [2021-08-12 19:20:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 21103 transitions. [2021-08-12 19:20:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:06,774 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:06,774 INFO L550 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] [2021-08-12 19:20:06,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-12 19:20:06,775 INFO L430 AbstractCegarLoop]: === Iteration 53 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:06,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:06,775 INFO L82 PathProgramCache]: Analyzing trace with hash 253187976, now seen corresponding path program 53 times [2021-08-12 19:20:06,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:06,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816859132] [2021-08-12 19:20:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:07,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:07,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816859132] [2021-08-12 19:20:07,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816859132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:07,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:07,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:20:07,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504214421] [2021-08-12 19:20:07,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:20:07,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:07,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:20:07,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:20:07,051 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) [2021-08-12 19:20:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:08,667 INFO L93 Difference]: Finished difference Result 6523 states and 22798 transitions. [2021-08-12 19:20:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:20:08,667 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 [2021-08-12 19:20:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:08,690 INFO L225 Difference]: With dead ends: 6523 [2021-08-12 19:20:08,690 INFO L226 Difference]: Without dead ends: 6272 [2021-08-12 19:20:08,692 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 773.2ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-08-12 19:20:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-08-12 19:20:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5952. [2021-08-12 19:20:08,895 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) [2021-08-12 19:20:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 20895 transitions. [2021-08-12 19:20:08,916 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 20895 transitions. Word has length 47 [2021-08-12 19:20:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:08,917 INFO L482 AbstractCegarLoop]: Abstraction has 5952 states and 20895 transitions. [2021-08-12 19:20:08,917 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) [2021-08-12 19:20:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 20895 transitions. [2021-08-12 19:20:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:08,926 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:08,926 INFO L550 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] [2021-08-12 19:20:08,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-12 19:20:08,926 INFO L430 AbstractCegarLoop]: === Iteration 54 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1988507238, now seen corresponding path program 54 times [2021-08-12 19:20:08,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:08,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347686403] [2021-08-12 19:20:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:09,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:09,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347686403] [2021-08-12 19:20:09,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347686403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:09,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:09,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:20:09,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362408104] [2021-08-12 19:20:09,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:20:09,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:20:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:20:09,178 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) [2021-08-12 19:20:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:10,718 INFO L93 Difference]: Finished difference Result 6411 states and 22382 transitions. [2021-08-12 19:20:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:20:10,719 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 [2021-08-12 19:20:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:10,741 INFO L225 Difference]: With dead ends: 6411 [2021-08-12 19:20:10,741 INFO L226 Difference]: Without dead ends: 6272 [2021-08-12 19:20:10,744 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 714.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-08-12 19:20:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-08-12 19:20:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5970. [2021-08-12 19:20:10,950 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) [2021-08-12 19:20:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20940 transitions. [2021-08-12 19:20:11,032 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20940 transitions. Word has length 47 [2021-08-12 19:20:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:11,032 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20940 transitions. [2021-08-12 19:20:11,032 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) [2021-08-12 19:20:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20940 transitions. [2021-08-12 19:20:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:11,040 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:11,041 INFO L550 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] [2021-08-12 19:20:11,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-12 19:20:11,041 INFO L430 AbstractCegarLoop]: === Iteration 55 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1179566630, now seen corresponding path program 55 times [2021-08-12 19:20:11,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:11,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401052212] [2021-08-12 19:20:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:11,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:11,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401052212] [2021-08-12 19:20:11,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401052212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:11,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:11,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:11,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201772261] [2021-08-12 19:20:11,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:11,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:11,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:11,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:11,350 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) [2021-08-12 19:20:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:13,000 INFO L93 Difference]: Finished difference Result 6395 states and 22314 transitions. [2021-08-12 19:20:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:20:13,000 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 [2021-08-12 19:20:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:13,023 INFO L225 Difference]: With dead ends: 6395 [2021-08-12 19:20:13,023 INFO L226 Difference]: Without dead ends: 6248 [2021-08-12 19:20:13,026 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 819.2ms TimeCoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:20:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2021-08-12 19:20:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 5970. [2021-08-12 19:20:13,237 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) [2021-08-12 19:20:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 20934 transitions. [2021-08-12 19:20:13,265 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 20934 transitions. Word has length 47 [2021-08-12 19:20:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:13,265 INFO L482 AbstractCegarLoop]: Abstraction has 5970 states and 20934 transitions. [2021-08-12 19:20:13,265 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) [2021-08-12 19:20:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 20934 transitions. [2021-08-12 19:20:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:13,275 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:13,275 INFO L550 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] [2021-08-12 19:20:13,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-12 19:20:13,275 INFO L430 AbstractCegarLoop]: === Iteration 56 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2079462408, now seen corresponding path program 56 times [2021-08-12 19:20:13,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:13,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662474980] [2021-08-12 19:20:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:13,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:13,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662474980] [2021-08-12 19:20:13,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662474980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:13,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:13,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:13,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005297055] [2021-08-12 19:20:13,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:13,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:13,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:13,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:13,531 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) [2021-08-12 19:20:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:18,259 INFO L93 Difference]: Finished difference Result 11010 states and 39098 transitions. [2021-08-12 19:20:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-12 19:20:18,260 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 [2021-08-12 19:20:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:18,292 INFO L225 Difference]: With dead ends: 11010 [2021-08-12 19:20:18,292 INFO L226 Difference]: Without dead ends: 10871 [2021-08-12 19:20:18,296 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 2146.8ms TimeCoverageRelationStatistics Valid=609, Invalid=6363, Unknown=0, NotChecked=0, Total=6972 [2021-08-12 19:20:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-08-12 19:20:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 6020. [2021-08-12 19:20:18,530 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) [2021-08-12 19:20:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 21110 transitions. [2021-08-12 19:20:18,557 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 21110 transitions. Word has length 47 [2021-08-12 19:20:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:18,557 INFO L482 AbstractCegarLoop]: Abstraction has 6020 states and 21110 transitions. [2021-08-12 19:20:18,557 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) [2021-08-12 19:20:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 21110 transitions. [2021-08-12 19:20:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:18,566 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:18,566 INFO L550 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] [2021-08-12 19:20:18,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-12 19:20:18,566 INFO L430 AbstractCegarLoop]: === Iteration 57 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1228810500, now seen corresponding path program 57 times [2021-08-12 19:20:18,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:18,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180751262] [2021-08-12 19:20:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:18,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:18,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180751262] [2021-08-12 19:20:18,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180751262] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:18,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:18,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:18,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963962116] [2021-08-12 19:20:18,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:18,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:18,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:18,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:18,820 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) [2021-08-12 19:20:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:23,388 INFO L93 Difference]: Finished difference Result 11029 states and 39286 transitions. [2021-08-12 19:20:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-08-12 19:20:23,389 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 [2021-08-12 19:20:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:23,419 INFO L225 Difference]: With dead ends: 11029 [2021-08-12 19:20:23,419 INFO L226 Difference]: Without dead ends: 10920 [2021-08-12 19:20:23,423 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 1965.1ms TimeCoverageRelationStatistics Valid=568, Invalid=6074, Unknown=0, NotChecked=0, Total=6642 [2021-08-12 19:20:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2021-08-12 19:20:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 5998. [2021-08-12 19:20:23,656 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) [2021-08-12 19:20:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 21051 transitions. [2021-08-12 19:20:23,679 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 21051 transitions. Word has length 47 [2021-08-12 19:20:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:23,679 INFO L482 AbstractCegarLoop]: Abstraction has 5998 states and 21051 transitions. [2021-08-12 19:20:23,680 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) [2021-08-12 19:20:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 21051 transitions. [2021-08-12 19:20:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:23,688 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:23,688 INFO L550 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] [2021-08-12 19:20:23,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-12 19:20:23,688 INFO L430 AbstractCegarLoop]: === Iteration 58 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:23,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1385555350, now seen corresponding path program 58 times [2021-08-12 19:20:23,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:23,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175155019] [2021-08-12 19:20:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:23,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:23,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175155019] [2021-08-12 19:20:23,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175155019] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:23,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:23,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:23,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529472189] [2021-08-12 19:20:23,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:23,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:23,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:23,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:23,945 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) [2021-08-12 19:20:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:25,776 INFO L93 Difference]: Finished difference Result 6603 states and 22972 transitions. [2021-08-12 19:20:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:20:25,777 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 [2021-08-12 19:20:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:25,795 INFO L225 Difference]: With dead ends: 6603 [2021-08-12 19:20:25,795 INFO L226 Difference]: Without dead ends: 6480 [2021-08-12 19:20:25,797 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 866.5ms TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:20:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2021-08-12 19:20:25,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 6004. [2021-08-12 19:20:26,000 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) [2021-08-12 19:20:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6004 states to 6004 states and 21064 transitions. [2021-08-12 19:20:26,019 INFO L78 Accepts]: Start accepts. Automaton has 6004 states and 21064 transitions. Word has length 47 [2021-08-12 19:20:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:26,019 INFO L482 AbstractCegarLoop]: Abstraction has 6004 states and 21064 transitions. [2021-08-12 19:20:26,019 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) [2021-08-12 19:20:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states and 21064 transitions. [2021-08-12 19:20:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:26,027 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:26,027 INFO L550 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] [2021-08-12 19:20:26,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-12 19:20:26,027 INFO L430 AbstractCegarLoop]: === Iteration 59 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:26,027 INFO L82 PathProgramCache]: Analyzing trace with hash 185866086, now seen corresponding path program 59 times [2021-08-12 19:20:26,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:26,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170934812] [2021-08-12 19:20:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:26,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:26,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170934812] [2021-08-12 19:20:26,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170934812] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:26,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:26,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:26,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794290265] [2021-08-12 19:20:26,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:26,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:26,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:26,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:26,283 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) [2021-08-12 19:20:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:28,788 INFO L93 Difference]: Finished difference Result 7447 states and 26091 transitions. [2021-08-12 19:20:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-12 19:20:28,788 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 [2021-08-12 19:20:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:28,817 INFO L225 Difference]: With dead ends: 7447 [2021-08-12 19:20:28,817 INFO L226 Difference]: Without dead ends: 7201 [2021-08-12 19:20:28,821 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1042.8ms TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2021-08-12 19:20:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-08-12 19:20:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 6072. [2021-08-12 19:20:29,057 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) [2021-08-12 19:20:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21288 transitions. [2021-08-12 19:20:29,079 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21288 transitions. Word has length 47 [2021-08-12 19:20:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:29,079 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21288 transitions. [2021-08-12 19:20:29,079 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) [2021-08-12 19:20:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21288 transitions. [2021-08-12 19:20:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:29,088 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:29,088 INFO L550 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] [2021-08-12 19:20:29,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-12 19:20:29,088 INFO L430 AbstractCegarLoop]: === Iteration 60 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:29,088 INFO L82 PathProgramCache]: Analyzing trace with hash 484757764, now seen corresponding path program 60 times [2021-08-12 19:20:29,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:29,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035772875] [2021-08-12 19:20:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:29,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:29,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035772875] [2021-08-12 19:20:29,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035772875] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:29,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:29,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:29,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278651140] [2021-08-12 19:20:29,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:29,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:29,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:29,348 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) [2021-08-12 19:20:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:31,263 INFO L93 Difference]: Finished difference Result 6572 states and 22875 transitions. [2021-08-12 19:20:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-12 19:20:31,263 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 [2021-08-12 19:20:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:31,283 INFO L225 Difference]: With dead ends: 6572 [2021-08-12 19:20:31,284 INFO L226 Difference]: Without dead ends: 6473 [2021-08-12 19:20:31,286 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 827.6ms TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:20:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2021-08-12 19:20:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6086. [2021-08-12 19:20:31,502 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) [2021-08-12 19:20:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 21315 transitions. [2021-08-12 19:20:31,524 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 21315 transitions. Word has length 47 [2021-08-12 19:20:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:31,525 INFO L482 AbstractCegarLoop]: Abstraction has 6086 states and 21315 transitions. [2021-08-12 19:20:31,525 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) [2021-08-12 19:20:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 21315 transitions. [2021-08-12 19:20:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:31,533 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:31,533 INFO L550 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] [2021-08-12 19:20:31,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-12 19:20:31,533 INFO L430 AbstractCegarLoop]: === Iteration 61 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:31,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1240662746, now seen corresponding path program 61 times [2021-08-12 19:20:31,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:31,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381329690] [2021-08-12 19:20:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:31,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:31,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381329690] [2021-08-12 19:20:31,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381329690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:31,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:31,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:31,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265347970] [2021-08-12 19:20:31,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:31,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:31,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:31,818 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) [2021-08-12 19:20:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:33,590 INFO L93 Difference]: Finished difference Result 6457 states and 22522 transitions. [2021-08-12 19:20:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:20:33,591 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 [2021-08-12 19:20:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:33,611 INFO L225 Difference]: With dead ends: 6457 [2021-08-12 19:20:33,611 INFO L226 Difference]: Without dead ends: 6350 [2021-08-12 19:20:33,613 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 783.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:20:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-08-12 19:20:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6072. [2021-08-12 19:20:33,825 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) [2021-08-12 19:20:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 21282 transitions. [2021-08-12 19:20:33,851 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 21282 transitions. Word has length 47 [2021-08-12 19:20:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:33,851 INFO L482 AbstractCegarLoop]: Abstraction has 6072 states and 21282 transitions. [2021-08-12 19:20:33,851 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) [2021-08-12 19:20:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 21282 transitions. [2021-08-12 19:20:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:33,861 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:33,861 INFO L550 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] [2021-08-12 19:20:33,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-12 19:20:33,861 INFO L430 AbstractCegarLoop]: === Iteration 62 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:33,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1995258442, now seen corresponding path program 62 times [2021-08-12 19:20:33,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:33,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859344571] [2021-08-12 19:20:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:34,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:34,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859344571] [2021-08-12 19:20:34,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859344571] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:34,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:34,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:34,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189390786] [2021-08-12 19:20:34,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:34,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:34,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:34,143 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) [2021-08-12 19:20:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:35,984 INFO L93 Difference]: Finished difference Result 6714 states and 23402 transitions. [2021-08-12 19:20:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:20:35,985 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 [2021-08-12 19:20:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:36,005 INFO L225 Difference]: With dead ends: 6714 [2021-08-12 19:20:36,006 INFO L226 Difference]: Without dead ends: 6527 [2021-08-12 19:20:36,007 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 871.0ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-08-12 19:20:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2021-08-12 19:20:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 6076. [2021-08-12 19:20:36,231 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) [2021-08-12 19:20:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 21292 transitions. [2021-08-12 19:20:36,254 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 21292 transitions. Word has length 47 [2021-08-12 19:20:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:36,254 INFO L482 AbstractCegarLoop]: Abstraction has 6076 states and 21292 transitions. [2021-08-12 19:20:36,254 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) [2021-08-12 19:20:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 21292 transitions. [2021-08-12 19:20:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:36,263 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:36,264 INFO L550 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] [2021-08-12 19:20:36,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-12 19:20:36,264 INFO L430 AbstractCegarLoop]: === Iteration 63 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2112750184, now seen corresponding path program 63 times [2021-08-12 19:20:36,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:36,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340978062] [2021-08-12 19:20:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:36,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:36,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340978062] [2021-08-12 19:20:36,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340978062] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:36,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:36,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:36,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083781215] [2021-08-12 19:20:36,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:36,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:36,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:36,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:36,572 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) [2021-08-12 19:20:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:38,454 INFO L93 Difference]: Finished difference Result 6806 states and 23605 transitions. [2021-08-12 19:20:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:20:38,455 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 [2021-08-12 19:20:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:38,475 INFO L225 Difference]: With dead ends: 6806 [2021-08-12 19:20:38,475 INFO L226 Difference]: Without dead ends: 6667 [2021-08-12 19:20:38,478 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 921.3ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-08-12 19:20:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2021-08-12 19:20:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6082. [2021-08-12 19:20:38,699 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) [2021-08-12 19:20:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 21305 transitions. [2021-08-12 19:20:38,719 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 21305 transitions. Word has length 47 [2021-08-12 19:20:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:38,720 INFO L482 AbstractCegarLoop]: Abstraction has 6082 states and 21305 transitions. [2021-08-12 19:20:38,720 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) [2021-08-12 19:20:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 21305 transitions. [2021-08-12 19:20:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:38,728 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:38,728 INFO L550 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] [2021-08-12 19:20:38,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-12 19:20:38,728 INFO L430 AbstractCegarLoop]: === Iteration 64 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:38,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash -541328748, now seen corresponding path program 64 times [2021-08-12 19:20:38,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:38,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033372186] [2021-08-12 19:20:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:38,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:38,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033372186] [2021-08-12 19:20:38,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033372186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:38,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:38,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208418751] [2021-08-12 19:20:38,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:38,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:38,994 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) [2021-08-12 19:20:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:42,715 INFO L93 Difference]: Finished difference Result 11011 states and 38582 transitions. [2021-08-12 19:20:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-12 19:20:42,716 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 [2021-08-12 19:20:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:42,746 INFO L225 Difference]: With dead ends: 11011 [2021-08-12 19:20:42,746 INFO L226 Difference]: Without dead ends: 10769 [2021-08-12 19:20:42,749 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 1345.1ms TimeCoverageRelationStatistics Valid=381, Invalid=4449, Unknown=0, NotChecked=0, Total=4830 [2021-08-12 19:20:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2021-08-12 19:20:43,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 6106. [2021-08-12 19:20:43,016 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) [2021-08-12 19:20:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21373 transitions. [2021-08-12 19:20:43,043 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21373 transitions. Word has length 47 [2021-08-12 19:20:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:43,044 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21373 transitions. [2021-08-12 19:20:43,044 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) [2021-08-12 19:20:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21373 transitions. [2021-08-12 19:20:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:43,054 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:43,054 INFO L550 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] [2021-08-12 19:20:43,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-12 19:20:43,054 INFO L430 AbstractCegarLoop]: === Iteration 65 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:43,055 INFO L82 PathProgramCache]: Analyzing trace with hash -242437070, now seen corresponding path program 65 times [2021-08-12 19:20:43,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:43,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888156646] [2021-08-12 19:20:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:43,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:43,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888156646] [2021-08-12 19:20:43,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888156646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:43,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:43,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:43,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78566296] [2021-08-12 19:20:43,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:43,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:43,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:43,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:43,340 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) [2021-08-12 19:20:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:45,278 INFO L93 Difference]: Finished difference Result 6733 states and 23369 transitions. [2021-08-12 19:20:45,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:20:45,278 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 [2021-08-12 19:20:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:45,299 INFO L225 Difference]: With dead ends: 6733 [2021-08-12 19:20:45,299 INFO L226 Difference]: Without dead ends: 6634 [2021-08-12 19:20:45,301 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 895.3ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:20:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2021-08-12 19:20:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 6114. [2021-08-12 19:20:45,583 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) [2021-08-12 19:20:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 21391 transitions. [2021-08-12 19:20:45,606 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 21391 transitions. Word has length 47 [2021-08-12 19:20:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:45,606 INFO L482 AbstractCegarLoop]: Abstraction has 6114 states and 21391 transitions. [2021-08-12 19:20:45,606 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) [2021-08-12 19:20:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 21391 transitions. [2021-08-12 19:20:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:45,615 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:45,615 INFO L550 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] [2021-08-12 19:20:45,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-12 19:20:45,615 INFO L430 AbstractCegarLoop]: === Iteration 66 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:45,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1967857580, now seen corresponding path program 66 times [2021-08-12 19:20:45,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:45,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513732631] [2021-08-12 19:20:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:45,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:45,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513732631] [2021-08-12 19:20:45,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513732631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:45,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:45,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:45,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547764950] [2021-08-12 19:20:45,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:45,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:45,868 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) [2021-08-12 19:20:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:47,564 INFO L93 Difference]: Finished difference Result 6618 states and 23016 transitions. [2021-08-12 19:20:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:20:47,565 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 [2021-08-12 19:20:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:47,584 INFO L225 Difference]: With dead ends: 6618 [2021-08-12 19:20:47,584 INFO L226 Difference]: Without dead ends: 6517 [2021-08-12 19:20:47,585 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 721.8ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-08-12 19:20:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-08-12 19:20:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6106. [2021-08-12 19:20:47,806 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) [2021-08-12 19:20:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 21371 transitions. [2021-08-12 19:20:47,827 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 21371 transitions. Word has length 47 [2021-08-12 19:20:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:47,827 INFO L482 AbstractCegarLoop]: Abstraction has 6106 states and 21371 transitions. [2021-08-12 19:20:47,827 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) [2021-08-12 19:20:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 21371 transitions. [2021-08-12 19:20:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:47,835 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:47,835 INFO L550 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] [2021-08-12 19:20:47,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-12 19:20:47,835 INFO L430 AbstractCegarLoop]: === Iteration 67 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:47,835 INFO L82 PathProgramCache]: Analyzing trace with hash -892113016, now seen corresponding path program 67 times [2021-08-12 19:20:47,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:47,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501994422] [2021-08-12 19:20:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:48,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:48,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501994422] [2021-08-12 19:20:48,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501994422] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:48,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:48,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:20:48,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037166207] [2021-08-12 19:20:48,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:20:48,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:48,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:20:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:20:48,081 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) [2021-08-12 19:20:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:49,782 INFO L93 Difference]: Finished difference Result 6539 states and 22807 transitions. [2021-08-12 19:20:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:20:49,782 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 [2021-08-12 19:20:49,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:49,802 INFO L225 Difference]: With dead ends: 6539 [2021-08-12 19:20:49,802 INFO L226 Difference]: Without dead ends: 6392 [2021-08-12 19:20:49,804 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 746.8ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-08-12 19:20:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2021-08-12 19:20:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 6118. [2021-08-12 19:20:50,031 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) [2021-08-12 19:20:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21401 transitions. [2021-08-12 19:20:50,052 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21401 transitions. Word has length 47 [2021-08-12 19:20:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:50,052 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21401 transitions. [2021-08-12 19:20:50,052 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) [2021-08-12 19:20:50,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21401 transitions. [2021-08-12 19:20:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:50,061 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:50,061 INFO L550 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] [2021-08-12 19:20:50,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-12 19:20:50,061 INFO L430 AbstractCegarLoop]: === Iteration 68 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:50,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:50,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1459401574, now seen corresponding path program 68 times [2021-08-12 19:20:50,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:50,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413483612] [2021-08-12 19:20:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:50,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:50,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413483612] [2021-08-12 19:20:50,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413483612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:50,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:50,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:50,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308510551] [2021-08-12 19:20:50,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:50,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:50,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:50,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:50,323 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) [2021-08-12 19:20:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:52,112 INFO L93 Difference]: Finished difference Result 6560 states and 22811 transitions. [2021-08-12 19:20:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:20:52,112 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 [2021-08-12 19:20:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:52,136 INFO L225 Difference]: With dead ends: 6560 [2021-08-12 19:20:52,136 INFO L226 Difference]: Without dead ends: 6461 [2021-08-12 19:20:52,138 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 770.3ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:20:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-08-12 19:20:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6124. [2021-08-12 19:20:52,376 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) [2021-08-12 19:20:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 21416 transitions. [2021-08-12 19:20:52,397 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 21416 transitions. Word has length 47 [2021-08-12 19:20:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:52,397 INFO L482 AbstractCegarLoop]: Abstraction has 6124 states and 21416 transitions. [2021-08-12 19:20:52,397 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) [2021-08-12 19:20:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 21416 transitions. [2021-08-12 19:20:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:52,405 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:52,405 INFO L550 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] [2021-08-12 19:20:52,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-12 19:20:52,405 INFO L430 AbstractCegarLoop]: === Iteration 69 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:52,406 INFO L82 PathProgramCache]: Analyzing trace with hash -266018936, now seen corresponding path program 69 times [2021-08-12 19:20:52,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:52,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968492598] [2021-08-12 19:20:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:52,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:52,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968492598] [2021-08-12 19:20:52,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968492598] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:52,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:52,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:20:52,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411812380] [2021-08-12 19:20:52,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:20:52,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:52,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:20:52,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:20:52,656 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) [2021-08-12 19:20:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:54,336 INFO L93 Difference]: Finished difference Result 6445 states and 22458 transitions. [2021-08-12 19:20:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-12 19:20:54,336 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 [2021-08-12 19:20:54,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:54,356 INFO L225 Difference]: With dead ends: 6445 [2021-08-12 19:20:54,356 INFO L226 Difference]: Without dead ends: 6282 [2021-08-12 19:20:54,357 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 708.0ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:20:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-08-12 19:20:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6054. [2021-08-12 19:20:54,590 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) [2021-08-12 19:20:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 21235 transitions. [2021-08-12 19:20:54,612 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 21235 transitions. Word has length 47 [2021-08-12 19:20:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:54,613 INFO L482 AbstractCegarLoop]: Abstraction has 6054 states and 21235 transitions. [2021-08-12 19:20:54,613 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) [2021-08-12 19:20:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 21235 transitions. [2021-08-12 19:20:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:54,621 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:54,621 INFO L550 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] [2021-08-12 19:20:54,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-12 19:20:54,622 INFO L430 AbstractCegarLoop]: === Iteration 70 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1367624742, now seen corresponding path program 70 times [2021-08-12 19:20:54,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:54,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334564641] [2021-08-12 19:20:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:54,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:54,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334564641] [2021-08-12 19:20:54,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334564641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:54,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:54,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:20:54,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874916905] [2021-08-12 19:20:54,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:20:54,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:20:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:20:54,890 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) [2021-08-12 19:20:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:56,623 INFO L93 Difference]: Finished difference Result 6793 states and 23682 transitions. [2021-08-12 19:20:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:20:56,623 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 [2021-08-12 19:20:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:56,645 INFO L225 Difference]: With dead ends: 6793 [2021-08-12 19:20:56,645 INFO L226 Difference]: Without dead ends: 6654 [2021-08-12 19:20:56,647 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 741.6ms TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:20:56,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-08-12 19:20:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 6074. [2021-08-12 19:20:56,883 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) [2021-08-12 19:20:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 21301 transitions. [2021-08-12 19:20:56,904 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 21301 transitions. Word has length 47 [2021-08-12 19:20:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:56,904 INFO L482 AbstractCegarLoop]: Abstraction has 6074 states and 21301 transitions. [2021-08-12 19:20:56,904 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) [2021-08-12 19:20:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 21301 transitions. [2021-08-12 19:20:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:56,912 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:56,912 INFO L550 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] [2021-08-12 19:20:56,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-12 19:20:56,912 INFO L430 AbstractCegarLoop]: === Iteration 71 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash 150071480, now seen corresponding path program 71 times [2021-08-12 19:20:56,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:56,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059517348] [2021-08-12 19:20:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:57,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:57,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059517348] [2021-08-12 19:20:57,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059517348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:57,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:57,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:20:57,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904658377] [2021-08-12 19:20:57,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:20:57,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:20:57,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:20:57,157 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) [2021-08-12 19:20:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:20:58,985 INFO L93 Difference]: Finished difference Result 6852 states and 23841 transitions. [2021-08-12 19:20:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:20:58,985 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 [2021-08-12 19:20:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:20:59,003 INFO L225 Difference]: With dead ends: 6852 [2021-08-12 19:20:59,004 INFO L226 Difference]: Without dead ends: 6761 [2021-08-12 19:20:59,005 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 731.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:20:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-08-12 19:20:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6170. [2021-08-12 19:20:59,243 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) [2021-08-12 19:20:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21597 transitions. [2021-08-12 19:20:59,268 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21597 transitions. Word has length 47 [2021-08-12 19:20:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:20:59,268 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21597 transitions. [2021-08-12 19:20:59,268 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) [2021-08-12 19:20:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21597 transitions. [2021-08-12 19:20:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:20:59,278 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:20:59,278 INFO L550 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] [2021-08-12 19:20:59,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-12 19:20:59,278 INFO L430 AbstractCegarLoop]: === Iteration 72 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:20:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:20:59,279 INFO L82 PathProgramCache]: Analyzing trace with hash 584100826, now seen corresponding path program 72 times [2021-08-12 19:20:59,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:20:59,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551431182] [2021-08-12 19:20:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:20:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:20:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:20:59,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:20:59,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551431182] [2021-08-12 19:20:59,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551431182] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:20:59,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:20:59,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:20:59,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496429907] [2021-08-12 19:20:59,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:20:59,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:20:59,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:20:59,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:20:59,498 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) [2021-08-12 19:21:01,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:01,485 INFO L93 Difference]: Finished difference Result 6841 states and 23810 transitions. [2021-08-12 19:21:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:21:01,485 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 [2021-08-12 19:21:01,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:01,505 INFO L225 Difference]: With dead ends: 6841 [2021-08-12 19:21:01,506 INFO L226 Difference]: Without dead ends: 6614 [2021-08-12 19:21:01,508 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 742.7ms TimeCoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:21:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2021-08-12 19:21:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6144. [2021-08-12 19:21:01,748 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) [2021-08-12 19:21:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21508 transitions. [2021-08-12 19:21:01,772 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21508 transitions. Word has length 47 [2021-08-12 19:21:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:01,772 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21508 transitions. [2021-08-12 19:21:01,772 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) [2021-08-12 19:21:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21508 transitions. [2021-08-12 19:21:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:01,780 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:01,780 INFO L550 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] [2021-08-12 19:21:01,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-12 19:21:01,781 INFO L430 AbstractCegarLoop]: === Iteration 73 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2145534312, now seen corresponding path program 73 times [2021-08-12 19:21:01,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:01,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864237879] [2021-08-12 19:21:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:02,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:02,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864237879] [2021-08-12 19:21:02,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864237879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:02,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:02,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:21:02,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530486434] [2021-08-12 19:21:02,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:21:02,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:02,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:21:02,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:21:02,025 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) [2021-08-12 19:21:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:03,856 INFO L93 Difference]: Finished difference Result 6844 states and 23815 transitions. [2021-08-12 19:21:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:21:03,856 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 [2021-08-12 19:21:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:03,875 INFO L225 Difference]: With dead ends: 6844 [2021-08-12 19:21:03,876 INFO L226 Difference]: Without dead ends: 6753 [2021-08-12 19:21:03,877 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 757.1ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:21:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2021-08-12 19:21:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6168. [2021-08-12 19:21:04,119 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) [2021-08-12 19:21:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 21584 transitions. [2021-08-12 19:21:04,140 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 21584 transitions. Word has length 47 [2021-08-12 19:21:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:04,140 INFO L482 AbstractCegarLoop]: Abstraction has 6168 states and 21584 transitions. [2021-08-12 19:21:04,140 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) [2021-08-12 19:21:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 21584 transitions. [2021-08-12 19:21:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:04,149 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:04,149 INFO L550 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] [2021-08-12 19:21:04,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-12 19:21:04,149 INFO L430 AbstractCegarLoop]: === Iteration 74 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:04,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1715403638, now seen corresponding path program 74 times [2021-08-12 19:21:04,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:04,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050337910] [2021-08-12 19:21:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:04,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:04,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050337910] [2021-08-12 19:21:04,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050337910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:04,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:04,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:21:04,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656701636] [2021-08-12 19:21:04,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:21:04,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:04,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:21:04,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:21:04,376 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) [2021-08-12 19:21:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:06,237 INFO L93 Difference]: Finished difference Result 6868 states and 23891 transitions. [2021-08-12 19:21:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:21:06,237 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 [2021-08-12 19:21:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:06,258 INFO L225 Difference]: With dead ends: 6868 [2021-08-12 19:21:06,259 INFO L226 Difference]: Without dead ends: 6761 [2021-08-12 19:21:06,261 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 754.2ms TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:21:06,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2021-08-12 19:21:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 6160. [2021-08-12 19:21:06,506 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) [2021-08-12 19:21:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21556 transitions. [2021-08-12 19:21:06,527 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21556 transitions. Word has length 47 [2021-08-12 19:21:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:06,528 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21556 transitions. [2021-08-12 19:21:06,528 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) [2021-08-12 19:21:06,528 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21556 transitions. [2021-08-12 19:21:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:06,536 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:06,536 INFO L550 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] [2021-08-12 19:21:06,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-12 19:21:06,537 INFO L430 AbstractCegarLoop]: === Iteration 75 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:06,537 INFO L82 PathProgramCache]: Analyzing trace with hash -442469930, now seen corresponding path program 75 times [2021-08-12 19:21:06,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:06,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790662851] [2021-08-12 19:21:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:06,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:06,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790662851] [2021-08-12 19:21:06,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790662851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:06,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:06,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:21:06,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495698619] [2021-08-12 19:21:06,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:21:06,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:06,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:21:06,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:21:06,758 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) [2021-08-12 19:21:08,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:08,653 INFO L93 Difference]: Finished difference Result 6769 states and 23592 transitions. [2021-08-12 19:21:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:21:08,653 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 [2021-08-12 19:21:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:08,673 INFO L225 Difference]: With dead ends: 6769 [2021-08-12 19:21:08,674 INFO L226 Difference]: Without dead ends: 6542 [2021-08-12 19:21:08,675 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 727.4ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:21:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2021-08-12 19:21:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6080. [2021-08-12 19:21:08,920 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) [2021-08-12 19:21:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 21300 transitions. [2021-08-12 19:21:08,940 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 21300 transitions. Word has length 47 [2021-08-12 19:21:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:08,941 INFO L482 AbstractCegarLoop]: Abstraction has 6080 states and 21300 transitions. [2021-08-12 19:21:08,941 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) [2021-08-12 19:21:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 21300 transitions. [2021-08-12 19:21:08,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:08,948 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:08,949 INFO L550 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] [2021-08-12 19:21:08,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-12 19:21:08,949 INFO L430 AbstractCegarLoop]: === Iteration 76 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash -386634088, now seen corresponding path program 76 times [2021-08-12 19:21:08,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:08,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698189872] [2021-08-12 19:21:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:09,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:09,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698189872] [2021-08-12 19:21:09,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698189872] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:09,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:09,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:21:09,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495990930] [2021-08-12 19:21:09,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:21:09,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:09,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:21:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:21:09,209 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) [2021-08-12 19:21:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:13,509 INFO L93 Difference]: Finished difference Result 9851 states and 34420 transitions. [2021-08-12 19:21:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-12 19:21:13,510 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 [2021-08-12 19:21:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:13,536 INFO L225 Difference]: With dead ends: 9851 [2021-08-12 19:21:13,537 INFO L226 Difference]: Without dead ends: 9712 [2021-08-12 19:21:13,539 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1715.1ms TimeCoverageRelationStatistics Valid=467, Invalid=5083, Unknown=0, NotChecked=0, Total=5550 [2021-08-12 19:21:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-08-12 19:21:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 6118. [2021-08-12 19:21:13,810 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) [2021-08-12 19:21:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 21411 transitions. [2021-08-12 19:21:13,832 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 21411 transitions. Word has length 47 [2021-08-12 19:21:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:13,833 INFO L482 AbstractCegarLoop]: Abstraction has 6118 states and 21411 transitions. [2021-08-12 19:21:13,833 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) [2021-08-12 19:21:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 21411 transitions. [2021-08-12 19:21:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:13,840 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:13,840 INFO L550 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] [2021-08-12 19:21:13,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-12 19:21:13,841 INFO L430 AbstractCegarLoop]: === Iteration 77 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:13,841 INFO L82 PathProgramCache]: Analyzing trace with hash -400165510, now seen corresponding path program 77 times [2021-08-12 19:21:13,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:13,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155504793] [2021-08-12 19:21:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:14,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:14,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155504793] [2021-08-12 19:21:14,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155504793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:14,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:14,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:14,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425322689] [2021-08-12 19:21:14,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:14,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:14,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:14,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:14,079 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) [2021-08-12 19:21:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:18,941 INFO L93 Difference]: Finished difference Result 10933 states and 38499 transitions. [2021-08-12 19:21:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-12 19:21:18,941 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 [2021-08-12 19:21:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:18,972 INFO L225 Difference]: With dead ends: 10933 [2021-08-12 19:21:18,972 INFO L226 Difference]: Without dead ends: 10842 [2021-08-12 19:21:18,975 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1988.1ms TimeCoverageRelationStatistics Valid=594, Invalid=6048, Unknown=0, NotChecked=0, Total=6642 [2021-08-12 19:21:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2021-08-12 19:21:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 6122. [2021-08-12 19:21:19,260 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) [2021-08-12 19:21:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 21419 transitions. [2021-08-12 19:21:19,282 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 21419 transitions. Word has length 47 [2021-08-12 19:21:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:19,282 INFO L482 AbstractCegarLoop]: Abstraction has 6122 states and 21419 transitions. [2021-08-12 19:21:19,282 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) [2021-08-12 19:21:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 21419 transitions. [2021-08-12 19:21:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:19,290 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:19,290 INFO L550 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] [2021-08-12 19:21:19,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-12 19:21:19,290 INFO L430 AbstractCegarLoop]: === Iteration 78 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:19,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1250817418, now seen corresponding path program 78 times [2021-08-12 19:21:19,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:19,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436901959] [2021-08-12 19:21:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:19,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:19,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436901959] [2021-08-12 19:21:19,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436901959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:19,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:19,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:19,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530865812] [2021-08-12 19:21:19,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:19,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:19,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:19,526 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) [2021-08-12 19:21:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:24,362 INFO L93 Difference]: Finished difference Result 11012 states and 38915 transitions. [2021-08-12 19:21:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-12 19:21:24,363 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 [2021-08-12 19:21:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:24,393 INFO L225 Difference]: With dead ends: 11012 [2021-08-12 19:21:24,393 INFO L226 Difference]: Without dead ends: 10903 [2021-08-12 19:21:24,397 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1898.5ms TimeCoverageRelationStatistics Valid=553, Invalid=5767, Unknown=0, NotChecked=0, Total=6320 [2021-08-12 19:21:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2021-08-12 19:21:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 6084. [2021-08-12 19:21:24,757 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) [2021-08-12 19:21:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 21306 transitions. [2021-08-12 19:21:24,781 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 21306 transitions. Word has length 47 [2021-08-12 19:21:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:24,781 INFO L482 AbstractCegarLoop]: Abstraction has 6084 states and 21306 transitions. [2021-08-12 19:21:24,781 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) [2021-08-12 19:21:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 21306 transitions. [2021-08-12 19:21:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:24,791 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:24,791 INFO L550 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] [2021-08-12 19:21:24,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-12 19:21:24,791 INFO L430 AbstractCegarLoop]: === Iteration 79 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:24,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1350183558, now seen corresponding path program 79 times [2021-08-12 19:21:24,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:24,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058351613] [2021-08-12 19:21:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:25,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:25,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058351613] [2021-08-12 19:21:25,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058351613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:25,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:25,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:25,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380438942] [2021-08-12 19:21:25,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:25,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:25,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:25,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:25,033 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) [2021-08-12 19:21:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:27,170 INFO L93 Difference]: Finished difference Result 7052 states and 24384 transitions. [2021-08-12 19:21:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-12 19:21:27,171 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 [2021-08-12 19:21:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:27,190 INFO L225 Difference]: With dead ends: 7052 [2021-08-12 19:21:27,191 INFO L226 Difference]: Without dead ends: 6961 [2021-08-12 19:21:27,192 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 898.8ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:21:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-08-12 19:21:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6094. [2021-08-12 19:21:27,457 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) [2021-08-12 19:21:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 21333 transitions. [2021-08-12 19:21:27,483 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 21333 transitions. Word has length 47 [2021-08-12 19:21:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:27,483 INFO L482 AbstractCegarLoop]: Abstraction has 6094 states and 21333 transitions. [2021-08-12 19:21:27,483 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) [2021-08-12 19:21:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 21333 transitions. [2021-08-12 19:21:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:27,492 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:27,492 INFO L550 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] [2021-08-12 19:21:27,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-12 19:21:27,493 INFO L430 AbstractCegarLoop]: === Iteration 80 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:27,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1673845382, now seen corresponding path program 80 times [2021-08-12 19:21:27,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:27,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940211231] [2021-08-12 19:21:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:27,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:27,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940211231] [2021-08-12 19:21:27,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940211231] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:27,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:27,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:27,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728254344] [2021-08-12 19:21:27,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:27,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:27,733 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) [2021-08-12 19:21:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:29,980 INFO L93 Difference]: Finished difference Result 6985 states and 24197 transitions. [2021-08-12 19:21:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-12 19:21:29,980 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 [2021-08-12 19:21:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:30,000 INFO L225 Difference]: With dead ends: 6985 [2021-08-12 19:21:30,000 INFO L226 Difference]: Without dead ends: 6862 [2021-08-12 19:21:30,002 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 933.2ms TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2021-08-12 19:21:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2021-08-12 19:21:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 6090. [2021-08-12 19:21:30,274 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) [2021-08-12 19:21:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 21319 transitions. [2021-08-12 19:21:30,294 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 21319 transitions. Word has length 47 [2021-08-12 19:21:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:30,294 INFO L482 AbstractCegarLoop]: Abstraction has 6090 states and 21319 transitions. [2021-08-12 19:21:30,294 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) [2021-08-12 19:21:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 21319 transitions. [2021-08-12 19:21:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:30,301 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:30,302 INFO L550 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] [2021-08-12 19:21:30,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-12 19:21:30,302 INFO L430 AbstractCegarLoop]: === Iteration 81 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 221237878, now seen corresponding path program 81 times [2021-08-12 19:21:30,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:30,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714654878] [2021-08-12 19:21:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:30,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:30,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714654878] [2021-08-12 19:21:30,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714654878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:30,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:30,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:30,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87663725] [2021-08-12 19:21:30,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:30,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:30,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:30,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:30,574 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) [2021-08-12 19:21:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:33,192 INFO L93 Difference]: Finished difference Result 7661 states and 26556 transitions. [2021-08-12 19:21:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-12 19:21:33,197 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 [2021-08-12 19:21:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:33,222 INFO L225 Difference]: With dead ends: 7661 [2021-08-12 19:21:33,222 INFO L226 Difference]: Without dead ends: 7544 [2021-08-12 19:21:33,225 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 983.3ms TimeCoverageRelationStatistics Valid=243, Invalid=2513, Unknown=0, NotChecked=0, Total=2756 [2021-08-12 19:21:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7544 states. [2021-08-12 19:21:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7544 to 6202. [2021-08-12 19:21:33,510 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) [2021-08-12 19:21:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21679 transitions. [2021-08-12 19:21:33,532 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21679 transitions. Word has length 47 [2021-08-12 19:21:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:33,532 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21679 transitions. [2021-08-12 19:21:33,532 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) [2021-08-12 19:21:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21679 transitions. [2021-08-12 19:21:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:33,542 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:33,542 INFO L550 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] [2021-08-12 19:21:33,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-12 19:21:33,542 INFO L430 AbstractCegarLoop]: === Iteration 82 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:33,542 INFO L82 PathProgramCache]: Analyzing trace with hash 520129556, now seen corresponding path program 82 times [2021-08-12 19:21:33,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:33,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777926916] [2021-08-12 19:21:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:33,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:33,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777926916] [2021-08-12 19:21:33,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777926916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:33,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:33,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:33,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158118083] [2021-08-12 19:21:33,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:33,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:33,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:33,782 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) [2021-08-12 19:21:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:35,926 INFO L93 Difference]: Finished difference Result 7057 states and 24411 transitions. [2021-08-12 19:21:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:21:35,926 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 [2021-08-12 19:21:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:35,947 INFO L225 Difference]: With dead ends: 7057 [2021-08-12 19:21:35,947 INFO L226 Difference]: Without dead ends: 6958 [2021-08-12 19:21:35,950 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 856.0ms TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:21:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2021-08-12 19:21:36,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6216. [2021-08-12 19:21:36,286 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) [2021-08-12 19:21:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21706 transitions. [2021-08-12 19:21:36,307 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21706 transitions. Word has length 47 [2021-08-12 19:21:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:36,307 INFO L482 AbstractCegarLoop]: Abstraction has 6216 states and 21706 transitions. [2021-08-12 19:21:36,307 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) [2021-08-12 19:21:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21706 transitions. [2021-08-12 19:21:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:36,316 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:36,316 INFO L550 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] [2021-08-12 19:21:36,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-12 19:21:36,316 INFO L430 AbstractCegarLoop]: === Iteration 83 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:36,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1205290954, now seen corresponding path program 83 times [2021-08-12 19:21:36,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:36,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636775782] [2021-08-12 19:21:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:36,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:36,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636775782] [2021-08-12 19:21:36,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636775782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:36,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:36,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:36,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628770240] [2021-08-12 19:21:36,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:36,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:36,554 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) [2021-08-12 19:21:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:38,644 INFO L93 Difference]: Finished difference Result 7033 states and 24321 transitions. [2021-08-12 19:21:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:21:38,644 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 [2021-08-12 19:21:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:38,665 INFO L225 Difference]: With dead ends: 7033 [2021-08-12 19:21:38,666 INFO L226 Difference]: Without dead ends: 6926 [2021-08-12 19:21:38,667 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 759.9ms TimeCoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:21:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-08-12 19:21:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6202. [2021-08-12 19:21:38,954 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) [2021-08-12 19:21:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 21673 transitions. [2021-08-12 19:21:38,975 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 21673 transitions. Word has length 47 [2021-08-12 19:21:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:38,975 INFO L482 AbstractCegarLoop]: Abstraction has 6202 states and 21673 transitions. [2021-08-12 19:21:38,975 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) [2021-08-12 19:21:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 21673 transitions. [2021-08-12 19:21:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:38,984 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:38,984 INFO L550 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] [2021-08-12 19:21:38,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-12 19:21:38,984 INFO L430 AbstractCegarLoop]: === Iteration 84 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:38,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1114276790, now seen corresponding path program 84 times [2021-08-12 19:21:38,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:38,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348055526] [2021-08-12 19:21:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:39,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:39,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348055526] [2021-08-12 19:21:39,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348055526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:39,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:39,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:39,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133424009] [2021-08-12 19:21:39,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:39,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:39,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:39,241 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) [2021-08-12 19:21:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:41,470 INFO L93 Difference]: Finished difference Result 6944 states and 24125 transitions. [2021-08-12 19:21:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-12 19:21:41,471 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 [2021-08-12 19:21:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:41,491 INFO L225 Difference]: With dead ends: 6944 [2021-08-12 19:21:41,491 INFO L226 Difference]: Without dead ends: 6853 [2021-08-12 19:21:41,493 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 885.2ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-08-12 19:21:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-08-12 19:21:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6222. [2021-08-12 19:21:41,783 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) [2021-08-12 19:21:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 21743 transitions. [2021-08-12 19:21:41,804 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 21743 transitions. Word has length 47 [2021-08-12 19:21:41,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:41,804 INFO L482 AbstractCegarLoop]: Abstraction has 6222 states and 21743 transitions. [2021-08-12 19:21:41,804 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) [2021-08-12 19:21:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 21743 transitions. [2021-08-12 19:21:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:41,813 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:41,813 INFO L550 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] [2021-08-12 19:21:41,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-12 19:21:41,813 INFO L430 AbstractCegarLoop]: === Iteration 85 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:41,814 INFO L82 PathProgramCache]: Analyzing trace with hash 790614966, now seen corresponding path program 85 times [2021-08-12 19:21:41,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:41,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770883825] [2021-08-12 19:21:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:42,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:42,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770883825] [2021-08-12 19:21:42,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770883825] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:42,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:42,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:42,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635336002] [2021-08-12 19:21:42,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:42,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:42,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:42,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:42,058 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) [2021-08-12 19:21:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:44,337 INFO L93 Difference]: Finished difference Result 6972 states and 24213 transitions. [2021-08-12 19:21:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-12 19:21:44,337 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 [2021-08-12 19:21:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:44,358 INFO L225 Difference]: With dead ends: 6972 [2021-08-12 19:21:44,358 INFO L226 Difference]: Without dead ends: 6841 [2021-08-12 19:21:44,360 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 903.2ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-08-12 19:21:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2021-08-12 19:21:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6224. [2021-08-12 19:21:44,662 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) [2021-08-12 19:21:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21740 transitions. [2021-08-12 19:21:44,685 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21740 transitions. Word has length 47 [2021-08-12 19:21:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:44,685 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21740 transitions. [2021-08-12 19:21:44,685 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) [2021-08-12 19:21:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21740 transitions. [2021-08-12 19:21:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:44,695 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:44,695 INFO L550 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] [2021-08-12 19:21:44,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-12 19:21:44,695 INFO L430 AbstractCegarLoop]: === Iteration 86 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:44,695 INFO L82 PathProgramCache]: Analyzing trace with hash 846726420, now seen corresponding path program 86 times [2021-08-12 19:21:44,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:44,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689851128] [2021-08-12 19:21:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:44,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:44,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689851128] [2021-08-12 19:21:44,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689851128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:44,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:44,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:44,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668216743] [2021-08-12 19:21:44,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:44,936 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) [2021-08-12 19:21:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:47,212 INFO L93 Difference]: Finished difference Result 6909 states and 24040 transitions. [2021-08-12 19:21:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-12 19:21:47,212 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 [2021-08-12 19:21:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:47,269 INFO L225 Difference]: With dead ends: 6909 [2021-08-12 19:21:47,269 INFO L226 Difference]: Without dead ends: 6746 [2021-08-12 19:21:47,270 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 896.4ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-08-12 19:21:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-08-12 19:21:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6208. [2021-08-12 19:21:47,566 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) [2021-08-12 19:21:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6208 states to 6208 states and 21688 transitions. [2021-08-12 19:21:47,587 INFO L78 Accepts]: Start accepts. Automaton has 6208 states and 21688 transitions. Word has length 47 [2021-08-12 19:21:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:47,587 INFO L482 AbstractCegarLoop]: Abstraction has 6208 states and 21688 transitions. [2021-08-12 19:21:47,587 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) [2021-08-12 19:21:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6208 states and 21688 transitions. [2021-08-12 19:21:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:47,596 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:47,596 INFO L550 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] [2021-08-12 19:21:47,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-12 19:21:47,596 INFO L430 AbstractCegarLoop]: === Iteration 87 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:47,597 INFO L82 PathProgramCache]: Analyzing trace with hash -951643210, now seen corresponding path program 87 times [2021-08-12 19:21:47,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:47,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816443089] [2021-08-12 19:21:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:47,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:47,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816443089] [2021-08-12 19:21:47,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816443089] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:47,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:47,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:47,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636077788] [2021-08-12 19:21:47,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:47,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:47,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:47,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:47,832 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) [2021-08-12 19:21:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:51,014 INFO L93 Difference]: Finished difference Result 8259 states and 28676 transitions. [2021-08-12 19:21:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-12 19:21:51,015 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 [2021-08-12 19:21:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:51,039 INFO L225 Difference]: With dead ends: 8259 [2021-08-12 19:21:51,040 INFO L226 Difference]: Without dead ends: 8060 [2021-08-12 19:21:51,042 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1165.2ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-08-12 19:21:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-08-12 19:21:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 6144. [2021-08-12 19:21:51,345 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) [2021-08-12 19:21:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21494 transitions. [2021-08-12 19:21:51,366 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21494 transitions. Word has length 47 [2021-08-12 19:21:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:51,366 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21494 transitions. [2021-08-12 19:21:51,366 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) [2021-08-12 19:21:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21494 transitions. [2021-08-12 19:21:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:51,374 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:51,374 INFO L550 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] [2021-08-12 19:21:51,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-12 19:21:51,374 INFO L430 AbstractCegarLoop]: === Iteration 88 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:51,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1726760812, now seen corresponding path program 88 times [2021-08-12 19:21:51,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:51,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044924641] [2021-08-12 19:21:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:51,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:51,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044924641] [2021-08-12 19:21:51,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044924641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:51,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:51,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:51,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491643686] [2021-08-12 19:21:51,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:51,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:51,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:51,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:51,643 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) [2021-08-12 19:21:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:54,828 INFO L93 Difference]: Finished difference Result 8153 states and 28337 transitions. [2021-08-12 19:21:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-12 19:21:54,828 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 [2021-08-12 19:21:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:54,850 INFO L225 Difference]: With dead ends: 8153 [2021-08-12 19:21:54,850 INFO L226 Difference]: Without dead ends: 8056 [2021-08-12 19:21:54,851 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1191.2ms TimeCoverageRelationStatistics Valid=313, Invalid=3347, Unknown=0, NotChecked=0, Total=3660 [2021-08-12 19:21:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-08-12 19:21:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6132. [2021-08-12 19:21:55,159 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) [2021-08-12 19:21:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21464 transitions. [2021-08-12 19:21:55,181 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21464 transitions. Word has length 47 [2021-08-12 19:21:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:55,182 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21464 transitions. [2021-08-12 19:21:55,182 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) [2021-08-12 19:21:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21464 transitions. [2021-08-12 19:21:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:55,191 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:55,191 INFO L550 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] [2021-08-12 19:21:55,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-12 19:21:55,191 INFO L430 AbstractCegarLoop]: === Iteration 89 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:55,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1427869134, now seen corresponding path program 89 times [2021-08-12 19:21:55,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:55,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317118980] [2021-08-12 19:21:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:55,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:55,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317118980] [2021-08-12 19:21:55,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317118980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:55,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:55,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:55,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177602733] [2021-08-12 19:21:55,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:55,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:55,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:55,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:55,428 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) [2021-08-12 19:21:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:21:57,649 INFO L93 Difference]: Finished difference Result 7018 states and 24297 transitions. [2021-08-12 19:21:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-12 19:21:57,650 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 [2021-08-12 19:21:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:21:57,670 INFO L225 Difference]: With dead ends: 7018 [2021-08-12 19:21:57,671 INFO L226 Difference]: Without dead ends: 6919 [2021-08-12 19:21:57,672 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 829.6ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:21:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-08-12 19:21:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6144. [2021-08-12 19:21:57,969 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) [2021-08-12 19:21:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 21492 transitions. [2021-08-12 19:21:57,992 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 21492 transitions. Word has length 47 [2021-08-12 19:21:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:21:57,992 INFO L482 AbstractCegarLoop]: Abstraction has 6144 states and 21492 transitions. [2021-08-12 19:21:57,992 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) [2021-08-12 19:21:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 21492 transitions. [2021-08-12 19:21:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:21:58,001 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:21:58,001 INFO L550 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] [2021-08-12 19:21:58,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-12 19:21:58,001 INFO L430 AbstractCegarLoop]: === Iteration 90 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:21:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:21:58,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1141677652, now seen corresponding path program 90 times [2021-08-12 19:21:58,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:21:58,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902910759] [2021-08-12 19:21:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:21:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:21:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:21:58,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:21:58,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902910759] [2021-08-12 19:21:58,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902910759] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:21:58,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:21:58,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:21:58,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915100153] [2021-08-12 19:21:58,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:21:58,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:21:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:21:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:21:58,237 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) [2021-08-12 19:22:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:00,538 INFO L93 Difference]: Finished difference Result 6994 states and 24207 transitions. [2021-08-12 19:22:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:22:00,539 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 [2021-08-12 19:22:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:00,560 INFO L225 Difference]: With dead ends: 6994 [2021-08-12 19:22:00,560 INFO L226 Difference]: Without dead ends: 6893 [2021-08-12 19:22:00,562 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 827.6ms TimeCoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:22:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-08-12 19:22:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6136. [2021-08-12 19:22:00,921 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) [2021-08-12 19:22:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 21472 transitions. [2021-08-12 19:22:00,942 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 21472 transitions. Word has length 47 [2021-08-12 19:22:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:00,943 INFO L482 AbstractCegarLoop]: Abstraction has 6136 states and 21472 transitions. [2021-08-12 19:22:00,943 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) [2021-08-12 19:22:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 21472 transitions. [2021-08-12 19:22:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:00,951 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:00,952 INFO L550 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] [2021-08-12 19:22:00,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-12 19:22:00,952 INFO L430 AbstractCegarLoop]: === Iteration 91 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:00,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:00,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2077545080, now seen corresponding path program 91 times [2021-08-12 19:22:00,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:00,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838627705] [2021-08-12 19:22:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:01,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:01,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838627705] [2021-08-12 19:22:01,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838627705] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:01,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:01,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:22:01,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60544520] [2021-08-12 19:22:01,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:22:01,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:22:01,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:22:01,185 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) [2021-08-12 19:22:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:03,462 INFO L93 Difference]: Finished difference Result 6773 states and 23604 transitions. [2021-08-12 19:22:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:22:03,462 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 [2021-08-12 19:22:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:03,483 INFO L225 Difference]: With dead ends: 6773 [2021-08-12 19:22:03,483 INFO L226 Difference]: Without dead ends: 6626 [2021-08-12 19:22:03,484 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 820.2ms TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2021-08-12 19:22:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2021-08-12 19:22:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6148. [2021-08-12 19:22:03,784 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) [2021-08-12 19:22:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-08-12 19:22:03,805 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-08-12 19:22:03,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:03,805 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-08-12 19:22:03,805 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) [2021-08-12 19:22:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-08-12 19:22:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:03,814 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:03,814 INFO L550 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] [2021-08-12 19:22:03,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-12 19:22:03,814 INFO L430 AbstractCegarLoop]: === Iteration 92 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:03,814 INFO L82 PathProgramCache]: Analyzing trace with hash 273969510, now seen corresponding path program 92 times [2021-08-12 19:22:03,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:03,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720724940] [2021-08-12 19:22:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:04,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:04,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720724940] [2021-08-12 19:22:04,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720724940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:04,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:04,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:22:04,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405853623] [2021-08-12 19:22:04,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:22:04,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:04,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:22:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:22:04,045 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) [2021-08-12 19:22:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:06,199 INFO L93 Difference]: Finished difference Result 6869 states and 23831 transitions. [2021-08-12 19:22:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:22:06,199 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 [2021-08-12 19:22:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:06,227 INFO L225 Difference]: With dead ends: 6869 [2021-08-12 19:22:06,228 INFO L226 Difference]: Without dead ends: 6770 [2021-08-12 19:22:06,231 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 760.0ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:22:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-08-12 19:22:06,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6154. [2021-08-12 19:22:06,553 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) [2021-08-12 19:22:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 21517 transitions. [2021-08-12 19:22:06,579 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 21517 transitions. Word has length 47 [2021-08-12 19:22:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:06,580 INFO L482 AbstractCegarLoop]: Abstraction has 6154 states and 21517 transitions. [2021-08-12 19:22:06,580 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) [2021-08-12 19:22:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 21517 transitions. [2021-08-12 19:22:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:06,590 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:06,590 INFO L550 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] [2021-08-12 19:22:06,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-12 19:22:06,590 INFO L430 AbstractCegarLoop]: === Iteration 93 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:06,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1451451000, now seen corresponding path program 93 times [2021-08-12 19:22:06,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:06,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689160810] [2021-08-12 19:22:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:06,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:06,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689160810] [2021-08-12 19:22:06,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689160810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:06,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:06,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:22:06,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326225931] [2021-08-12 19:22:06,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:22:06,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:06,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:22:06,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:22:06,831 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) [2021-08-12 19:22:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:08,952 INFO L93 Difference]: Finished difference Result 6770 states and 23526 transitions. [2021-08-12 19:22:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-12 19:22:08,952 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 [2021-08-12 19:22:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:08,973 INFO L225 Difference]: With dead ends: 6770 [2021-08-12 19:22:08,973 INFO L226 Difference]: Without dead ends: 6639 [2021-08-12 19:22:08,976 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 744.8ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:22:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-08-12 19:22:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6116. [2021-08-12 19:22:09,283 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) [2021-08-12 19:22:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 21428 transitions. [2021-08-12 19:22:09,305 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 21428 transitions. Word has length 47 [2021-08-12 19:22:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:09,305 INFO L482 AbstractCegarLoop]: Abstraction has 6116 states and 21428 transitions. [2021-08-12 19:22:09,305 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) [2021-08-12 19:22:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 21428 transitions. [2021-08-12 19:22:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:09,313 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:09,313 INFO L550 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] [2021-08-12 19:22:09,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-12 19:22:09,313 INFO L430 AbstractCegarLoop]: === Iteration 94 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash 380026104, now seen corresponding path program 94 times [2021-08-12 19:22:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:09,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107221561] [2021-08-12 19:22:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:09,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:09,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107221561] [2021-08-12 19:22:09,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107221561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:09,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:09,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:22:09,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220988253] [2021-08-12 19:22:09,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:22:09,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:09,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:22:09,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:22:09,569 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) [2021-08-12 19:22:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:11,599 INFO L93 Difference]: Finished difference Result 6671 states and 23241 transitions. [2021-08-12 19:22:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-12 19:22:11,599 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 [2021-08-12 19:22:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:11,621 INFO L225 Difference]: With dead ends: 6671 [2021-08-12 19:22:11,621 INFO L226 Difference]: Without dead ends: 6532 [2021-08-12 19:22:11,623 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 624.7ms TimeCoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2021-08-12 19:22:11,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-08-12 19:22:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6132. [2021-08-12 19:22:11,968 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) [2021-08-12 19:22:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21476 transitions. [2021-08-12 19:22:11,989 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21476 transitions. Word has length 47 [2021-08-12 19:22:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:11,989 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21476 transitions. [2021-08-12 19:22:11,989 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) [2021-08-12 19:22:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21476 transitions. [2021-08-12 19:22:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:11,997 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:11,998 INFO L550 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] [2021-08-12 19:22:11,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-12 19:22:11,998 INFO L430 AbstractCegarLoop]: === Iteration 95 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722326, now seen corresponding path program 95 times [2021-08-12 19:22:11,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:11,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215289322] [2021-08-12 19:22:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:12,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:12,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215289322] [2021-08-12 19:22:12,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215289322] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:12,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:12,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:12,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890771166] [2021-08-12 19:22:12,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:12,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:12,214 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) [2021-08-12 19:22:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:14,297 INFO L93 Difference]: Finished difference Result 6730 states and 23400 transitions. [2021-08-12 19:22:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:22:14,297 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 [2021-08-12 19:22:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:14,317 INFO L225 Difference]: With dead ends: 6730 [2021-08-12 19:22:14,318 INFO L226 Difference]: Without dead ends: 6639 [2021-08-12 19:22:14,319 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 655.2ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:22:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-08-12 19:22:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6196. [2021-08-12 19:22:14,661 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) [2021-08-12 19:22:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21692 transitions. [2021-08-12 19:22:14,685 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21692 transitions. Word has length 47 [2021-08-12 19:22:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:14,685 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21692 transitions. [2021-08-12 19:22:14,685 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) [2021-08-12 19:22:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21692 transitions. [2021-08-12 19:22:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:14,695 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:14,695 INFO L550 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] [2021-08-12 19:22:14,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-12 19:22:14,695 INFO L430 AbstractCegarLoop]: === Iteration 96 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:14,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1963215624, now seen corresponding path program 96 times [2021-08-12 19:22:14,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:14,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750755744] [2021-08-12 19:22:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:14,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:14,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750755744] [2021-08-12 19:22:14,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750755744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:14,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:14,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:14,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093031852] [2021-08-12 19:22:14,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:14,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:14,911 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) [2021-08-12 19:22:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:17,067 INFO L93 Difference]: Finished difference Result 6639 states and 23129 transitions. [2021-08-12 19:22:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-12 19:22:17,067 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 [2021-08-12 19:22:17,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:17,086 INFO L225 Difference]: With dead ends: 6639 [2021-08-12 19:22:17,087 INFO L226 Difference]: Without dead ends: 6508 [2021-08-12 19:22:17,088 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 649.2ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-08-12 19:22:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-08-12 19:22:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6196. [2021-08-12 19:22:17,410 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) [2021-08-12 19:22:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-08-12 19:22:17,433 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-08-12 19:22:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:17,433 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-08-12 19:22:17,434 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) [2021-08-12 19:22:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-08-12 19:22:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:17,443 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:17,443 INFO L550 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] [2021-08-12 19:22:17,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-12 19:22:17,443 INFO L430 AbstractCegarLoop]: === Iteration 97 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash -401782138, now seen corresponding path program 97 times [2021-08-12 19:22:17,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:17,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139464707] [2021-08-12 19:22:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:17,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:17,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139464707] [2021-08-12 19:22:17,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139464707] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:17,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:17,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:17,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244790922] [2021-08-12 19:22:17,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:17,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:17,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:17,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:17,655 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) [2021-08-12 19:22:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:19,757 INFO L93 Difference]: Finished difference Result 6682 states and 23240 transitions. [2021-08-12 19:22:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:22:19,757 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 [2021-08-12 19:22:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:19,777 INFO L225 Difference]: With dead ends: 6682 [2021-08-12 19:22:19,777 INFO L226 Difference]: Without dead ends: 6591 [2021-08-12 19:22:19,779 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 678.8ms TimeCoverageRelationStatistics Valid=171, Invalid=1551, Unknown=0, NotChecked=0, Total=1722 [2021-08-12 19:22:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-08-12 19:22:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6196. [2021-08-12 19:22:20,144 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) [2021-08-12 19:22:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21668 transitions. [2021-08-12 19:22:20,164 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21668 transitions. Word has length 47 [2021-08-12 19:22:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:20,164 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21668 transitions. [2021-08-12 19:22:20,164 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) [2021-08-12 19:22:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21668 transitions. [2021-08-12 19:22:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:20,173 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:20,173 INFO L550 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] [2021-08-12 19:22:20,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-12 19:22:20,173 INFO L430 AbstractCegarLoop]: === Iteration 98 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:20,174 INFO L82 PathProgramCache]: Analyzing trace with hash 32247208, now seen corresponding path program 98 times [2021-08-12 19:22:20,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:20,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634691838] [2021-08-12 19:22:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:20,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:20,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634691838] [2021-08-12 19:22:20,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634691838] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:20,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:20,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:20,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655036770] [2021-08-12 19:22:20,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:20,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:20,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:20,399 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) [2021-08-12 19:22:22,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:22,495 INFO L93 Difference]: Finished difference Result 6690 states and 23268 transitions. [2021-08-12 19:22:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:22:22,496 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 [2021-08-12 19:22:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:22,515 INFO L225 Difference]: With dead ends: 6690 [2021-08-12 19:22:22,516 INFO L226 Difference]: Without dead ends: 6583 [2021-08-12 19:22:22,517 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 659.4ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:22:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-08-12 19:22:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6212. [2021-08-12 19:22:22,848 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) [2021-08-12 19:22:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21716 transitions. [2021-08-12 19:22:22,870 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21716 transitions. Word has length 47 [2021-08-12 19:22:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:22,871 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21716 transitions. [2021-08-12 19:22:22,871 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) [2021-08-12 19:22:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21716 transitions. [2021-08-12 19:22:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:22,880 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:22,880 INFO L550 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] [2021-08-12 19:22:22,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-12 19:22:22,880 INFO L430 AbstractCegarLoop]: === Iteration 99 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:22,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1305180916, now seen corresponding path program 99 times [2021-08-12 19:22:22,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:22,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889431523] [2021-08-12 19:22:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:23,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:23,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889431523] [2021-08-12 19:22:23,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889431523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:23,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:23,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:23,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997866327] [2021-08-12 19:22:23,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:23,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:23,092 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) [2021-08-12 19:22:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:25,213 INFO L93 Difference]: Finished difference Result 6607 states and 23017 transitions. [2021-08-12 19:22:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-12 19:22:25,213 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 [2021-08-12 19:22:25,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:25,235 INFO L225 Difference]: With dead ends: 6607 [2021-08-12 19:22:25,235 INFO L226 Difference]: Without dead ends: 6352 [2021-08-12 19:22:25,237 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 649.2ms TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:22:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-08-12 19:22:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 6104. [2021-08-12 19:22:25,555 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) [2021-08-12 19:22:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21396 transitions. [2021-08-12 19:22:25,579 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21396 transitions. Word has length 47 [2021-08-12 19:22:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:25,579 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21396 transitions. [2021-08-12 19:22:25,580 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) [2021-08-12 19:22:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21396 transitions. [2021-08-12 19:22:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:25,588 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:25,589 INFO L550 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] [2021-08-12 19:22:25,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-12 19:22:25,589 INFO L430 AbstractCegarLoop]: === Iteration 100 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:25,589 INFO L82 PathProgramCache]: Analyzing trace with hash 851399496, now seen corresponding path program 100 times [2021-08-12 19:22:25,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:25,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309969005] [2021-08-12 19:22:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:25,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:25,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309969005] [2021-08-12 19:22:25,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309969005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:25,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:25,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:22:25,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145415233] [2021-08-12 19:22:25,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:22:25,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:25,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:22:25,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:22:25,810 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) [2021-08-12 19:22:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:27,822 INFO L93 Difference]: Finished difference Result 6683 states and 23267 transitions. [2021-08-12 19:22:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-12 19:22:27,822 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 [2021-08-12 19:22:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:27,845 INFO L225 Difference]: With dead ends: 6683 [2021-08-12 19:22:27,845 INFO L226 Difference]: Without dead ends: 6544 [2021-08-12 19:22:27,848 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 579.4ms TimeCoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2021-08-12 19:22:27,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2021-08-12 19:22:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6160. [2021-08-12 19:22:28,234 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) [2021-08-12 19:22:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21564 transitions. [2021-08-12 19:22:28,259 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21564 transitions. Word has length 47 [2021-08-12 19:22:28,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:28,259 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21564 transitions. [2021-08-12 19:22:28,259 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) [2021-08-12 19:22:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21564 transitions. [2021-08-12 19:22:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:28,269 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:28,269 INFO L550 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] [2021-08-12 19:22:28,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-12 19:22:28,269 INFO L430 AbstractCegarLoop]: === Iteration 101 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:28,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1568967496, now seen corresponding path program 101 times [2021-08-12 19:22:28,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:28,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326011496] [2021-08-12 19:22:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:28,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:28,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326011496] [2021-08-12 19:22:28,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326011496] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:28,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:28,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:28,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153711006] [2021-08-12 19:22:28,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:28,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:28,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:28,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:28,494 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) [2021-08-12 19:22:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:30,605 INFO L93 Difference]: Finished difference Result 6742 states and 23426 transitions. [2021-08-12 19:22:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-12 19:22:30,606 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 [2021-08-12 19:22:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:30,626 INFO L225 Difference]: With dead ends: 6742 [2021-08-12 19:22:30,626 INFO L226 Difference]: Without dead ends: 6651 [2021-08-12 19:22:30,628 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 633.2ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-08-12 19:22:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-08-12 19:22:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 6224. [2021-08-12 19:22:30,965 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) [2021-08-12 19:22:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21780 transitions. [2021-08-12 19:22:30,988 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21780 transitions. Word has length 47 [2021-08-12 19:22:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:30,988 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21780 transitions. [2021-08-12 19:22:30,988 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) [2021-08-12 19:22:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21780 transitions. [2021-08-12 19:22:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:30,997 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:30,997 INFO L550 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] [2021-08-12 19:22:30,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-12 19:22:30,998 INFO L430 AbstractCegarLoop]: === Iteration 102 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash -115495190, now seen corresponding path program 102 times [2021-08-12 19:22:30,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:30,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232180280] [2021-08-12 19:22:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:31,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:31,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232180280] [2021-08-12 19:22:31,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232180280] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:31,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:31,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:31,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418725050] [2021-08-12 19:22:31,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:31,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:31,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:31,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:31,212 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) [2021-08-12 19:22:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:33,298 INFO L93 Difference]: Finished difference Result 6651 states and 23155 transitions. [2021-08-12 19:22:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-12 19:22:33,298 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 [2021-08-12 19:22:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:33,318 INFO L225 Difference]: With dead ends: 6651 [2021-08-12 19:22:33,319 INFO L226 Difference]: Without dead ends: 6520 [2021-08-12 19:22:33,320 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 628.3ms TimeCoverageRelationStatistics Valid=141, Invalid=1341, Unknown=0, NotChecked=0, Total=1482 [2021-08-12 19:22:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-08-12 19:22:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 6224. [2021-08-12 19:22:33,660 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) [2021-08-12 19:22:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-08-12 19:22:33,682 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-08-12 19:22:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:33,682 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-08-12 19:22:33,682 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) [2021-08-12 19:22:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-08-12 19:22:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:33,691 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:33,691 INFO L550 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] [2021-08-12 19:22:33,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-12 19:22:33,691 INFO L430 AbstractCegarLoop]: === Iteration 103 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1928645226, now seen corresponding path program 103 times [2021-08-12 19:22:33,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:33,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509266299] [2021-08-12 19:22:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:33,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:33,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509266299] [2021-08-12 19:22:33,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509266299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:33,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:33,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:33,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768983733] [2021-08-12 19:22:33,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:33,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:33,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:33,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:33,904 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) [2021-08-12 19:22:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:36,062 INFO L93 Difference]: Finished difference Result 6694 states and 23266 transitions. [2021-08-12 19:22:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-12 19:22:36,062 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 [2021-08-12 19:22:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:36,085 INFO L225 Difference]: With dead ends: 6694 [2021-08-12 19:22:36,085 INFO L226 Difference]: Without dead ends: 6603 [2021-08-12 19:22:36,088 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 644.2ms TimeCoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:22:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2021-08-12 19:22:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6224. [2021-08-12 19:22:36,487 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) [2021-08-12 19:22:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 21756 transitions. [2021-08-12 19:22:36,508 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 21756 transitions. Word has length 47 [2021-08-12 19:22:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:36,508 INFO L482 AbstractCegarLoop]: Abstraction has 6224 states and 21756 transitions. [2021-08-12 19:22:36,508 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) [2021-08-12 19:22:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 21756 transitions. [2021-08-12 19:22:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:36,517 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:36,517 INFO L550 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] [2021-08-12 19:22:36,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-12 19:22:36,517 INFO L430 AbstractCegarLoop]: === Iteration 104 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash 244182540, now seen corresponding path program 104 times [2021-08-12 19:22:36,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:36,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793211752] [2021-08-12 19:22:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:36,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:36,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793211752] [2021-08-12 19:22:36,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793211752] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:36,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:36,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:36,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779095010] [2021-08-12 19:22:36,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:36,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:36,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:36,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:36,730 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) [2021-08-12 19:22:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:38,854 INFO L93 Difference]: Finished difference Result 6702 states and 23294 transitions. [2021-08-12 19:22:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-12 19:22:38,855 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 [2021-08-12 19:22:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:38,875 INFO L225 Difference]: With dead ends: 6702 [2021-08-12 19:22:38,875 INFO L226 Difference]: Without dead ends: 6595 [2021-08-12 19:22:38,877 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 616.9ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-08-12 19:22:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6595 states. [2021-08-12 19:22:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6595 to 6240. [2021-08-12 19:22:39,240 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) [2021-08-12 19:22:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 21804 transitions. [2021-08-12 19:22:39,264 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 21804 transitions. Word has length 47 [2021-08-12 19:22:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:39,264 INFO L482 AbstractCegarLoop]: Abstraction has 6240 states and 21804 transitions. [2021-08-12 19:22:39,264 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) [2021-08-12 19:22:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 21804 transitions. [2021-08-12 19:22:39,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:39,273 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:39,273 INFO L550 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] [2021-08-12 19:22:39,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-12 19:22:39,273 INFO L430 AbstractCegarLoop]: === Iteration 105 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1572879960, now seen corresponding path program 105 times [2021-08-12 19:22:39,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:39,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047796239] [2021-08-12 19:22:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:39,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:39,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047796239] [2021-08-12 19:22:39,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047796239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:39,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:39,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:39,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307818453] [2021-08-12 19:22:39,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:39,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:39,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:39,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:39,499 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) [2021-08-12 19:22:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:41,593 INFO L93 Difference]: Finished difference Result 6595 states and 22967 transitions. [2021-08-12 19:22:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-12 19:22:41,593 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 [2021-08-12 19:22:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:41,618 INFO L225 Difference]: With dead ends: 6595 [2021-08-12 19:22:41,618 INFO L226 Difference]: Without dead ends: 6320 [2021-08-12 19:22:41,621 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 591.5ms TimeCoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-08-12 19:22:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2021-08-12 19:22:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 6112. [2021-08-12 19:22:41,954 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) [2021-08-12 19:22:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 21412 transitions. [2021-08-12 19:22:41,976 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 21412 transitions. Word has length 47 [2021-08-12 19:22:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:41,976 INFO L482 AbstractCegarLoop]: Abstraction has 6112 states and 21412 transitions. [2021-08-12 19:22:41,976 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) [2021-08-12 19:22:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 21412 transitions. [2021-08-12 19:22:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:41,984 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:41,984 INFO L550 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] [2021-08-12 19:22:41,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-12 19:22:41,984 INFO L430 AbstractCegarLoop]: === Iteration 106 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:41,984 INFO L82 PathProgramCache]: Analyzing trace with hash 3597688, now seen corresponding path program 106 times [2021-08-12 19:22:41,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:41,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954547326] [2021-08-12 19:22:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:42,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:42,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954547326] [2021-08-12 19:22:42,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954547326] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:42,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:42,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:22:42,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79056882] [2021-08-12 19:22:42,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:22:42,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:42,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:22:42,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:22:42,248 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) [2021-08-12 19:22:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:44,467 INFO L93 Difference]: Finished difference Result 6839 states and 23809 transitions. [2021-08-12 19:22:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:22:44,467 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 [2021-08-12 19:22:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:44,490 INFO L225 Difference]: With dead ends: 6839 [2021-08-12 19:22:44,490 INFO L226 Difference]: Without dead ends: 6700 [2021-08-12 19:22:44,492 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 650.4ms TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-08-12 19:22:44,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-08-12 19:22:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6132. [2021-08-12 19:22:44,844 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) [2021-08-12 19:22:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21478 transitions. [2021-08-12 19:22:44,868 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21478 transitions. Word has length 47 [2021-08-12 19:22:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:44,868 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21478 transitions. [2021-08-12 19:22:44,868 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) [2021-08-12 19:22:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21478 transitions. [2021-08-12 19:22:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:44,877 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:44,877 INFO L550 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] [2021-08-12 19:22:44,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-12 19:22:44,877 INFO L430 AbstractCegarLoop]: === Iteration 107 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:44,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1521293910, now seen corresponding path program 107 times [2021-08-12 19:22:44,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:44,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767028706] [2021-08-12 19:22:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:45,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:45,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767028706] [2021-08-12 19:22:45,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767028706] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:45,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:45,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:45,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427244737] [2021-08-12 19:22:45,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:45,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:45,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:45,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:45,085 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) [2021-08-12 19:22:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:47,402 INFO L93 Difference]: Finished difference Result 6898 states and 23968 transitions. [2021-08-12 19:22:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:22:47,402 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 [2021-08-12 19:22:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:47,423 INFO L225 Difference]: With dead ends: 6898 [2021-08-12 19:22:47,423 INFO L226 Difference]: Without dead ends: 6807 [2021-08-12 19:22:47,425 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 661.5ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-08-12 19:22:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2021-08-12 19:22:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6196. [2021-08-12 19:22:47,785 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) [2021-08-12 19:22:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21694 transitions. [2021-08-12 19:22:47,811 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21694 transitions. Word has length 47 [2021-08-12 19:22:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:47,811 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21694 transitions. [2021-08-12 19:22:47,811 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) [2021-08-12 19:22:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21694 transitions. [2021-08-12 19:22:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:47,820 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:47,821 INFO L550 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] [2021-08-12 19:22:47,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-12 19:22:47,821 INFO L430 AbstractCegarLoop]: === Iteration 108 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:47,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1955323256, now seen corresponding path program 108 times [2021-08-12 19:22:47,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:47,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011986029] [2021-08-12 19:22:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:48,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:48,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011986029] [2021-08-12 19:22:48,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011986029] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:48,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:48,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:48,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676957959] [2021-08-12 19:22:48,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:48,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:48,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:48,030 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) [2021-08-12 19:22:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:50,357 INFO L93 Difference]: Finished difference Result 6807 states and 23697 transitions. [2021-08-12 19:22:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:22:50,357 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 [2021-08-12 19:22:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:50,379 INFO L225 Difference]: With dead ends: 6807 [2021-08-12 19:22:50,379 INFO L226 Difference]: Without dead ends: 6676 [2021-08-12 19:22:50,382 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 646.6ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:22:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-08-12 19:22:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 6196. [2021-08-12 19:22:50,776 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) [2021-08-12 19:22:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-08-12 19:22:50,797 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-08-12 19:22:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:50,797 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-08-12 19:22:50,797 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) [2021-08-12 19:22:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-08-12 19:22:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:50,806 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:50,806 INFO L550 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] [2021-08-12 19:22:50,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-12 19:22:50,807 INFO L430 AbstractCegarLoop]: === Iteration 109 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:50,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:50,807 INFO L82 PathProgramCache]: Analyzing trace with hash -778210554, now seen corresponding path program 109 times [2021-08-12 19:22:50,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:50,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208517539] [2021-08-12 19:22:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:51,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:51,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208517539] [2021-08-12 19:22:51,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208517539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:51,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:51,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:51,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538933815] [2021-08-12 19:22:51,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:51,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:51,021 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) [2021-08-12 19:22:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:53,400 INFO L93 Difference]: Finished difference Result 6946 states and 24144 transitions. [2021-08-12 19:22:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:22:53,401 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 [2021-08-12 19:22:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:53,426 INFO L225 Difference]: With dead ends: 6946 [2021-08-12 19:22:53,426 INFO L226 Difference]: Without dead ends: 6855 [2021-08-12 19:22:53,427 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 706.4ms TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:22:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2021-08-12 19:22:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6196. [2021-08-12 19:22:53,787 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) [2021-08-12 19:22:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 21670 transitions. [2021-08-12 19:22:53,810 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 21670 transitions. Word has length 47 [2021-08-12 19:22:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:53,810 INFO L482 AbstractCegarLoop]: Abstraction has 6196 states and 21670 transitions. [2021-08-12 19:22:53,810 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) [2021-08-12 19:22:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 21670 transitions. [2021-08-12 19:22:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:53,819 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:53,819 INFO L550 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] [2021-08-12 19:22:53,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-12 19:22:53,819 INFO L430 AbstractCegarLoop]: === Iteration 110 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:53,820 INFO L82 PathProgramCache]: Analyzing trace with hash -344181208, now seen corresponding path program 110 times [2021-08-12 19:22:53,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:53,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521360230] [2021-08-12 19:22:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:54,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:54,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521360230] [2021-08-12 19:22:54,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521360230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:54,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:54,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:54,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647806806] [2021-08-12 19:22:54,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:54,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:54,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:54,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:54,040 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) [2021-08-12 19:22:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:56,413 INFO L93 Difference]: Finished difference Result 6954 states and 24172 transitions. [2021-08-12 19:22:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:22:56,414 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 [2021-08-12 19:22:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:56,437 INFO L225 Difference]: With dead ends: 6954 [2021-08-12 19:22:56,437 INFO L226 Difference]: Without dead ends: 6847 [2021-08-12 19:22:56,439 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 690.8ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-08-12 19:22:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2021-08-12 19:22:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6212. [2021-08-12 19:22:56,838 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) [2021-08-12 19:22:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21718 transitions. [2021-08-12 19:22:56,859 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21718 transitions. Word has length 47 [2021-08-12 19:22:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:56,859 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21718 transitions. [2021-08-12 19:22:56,859 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) [2021-08-12 19:22:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21718 transitions. [2021-08-12 19:22:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:56,868 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:56,868 INFO L550 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] [2021-08-12 19:22:56,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-12 19:22:56,868 INFO L430 AbstractCegarLoop]: === Iteration 111 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:56,868 INFO L82 PathProgramCache]: Analyzing trace with hash 928752500, now seen corresponding path program 111 times [2021-08-12 19:22:56,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:56,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608410861] [2021-08-12 19:22:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:22:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:22:57,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:22:57,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608410861] [2021-08-12 19:22:57,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608410861] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:22:57,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:22:57,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:22:57,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380505165] [2021-08-12 19:22:57,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:22:57,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:22:57,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:22:57,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:22:57,082 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) [2021-08-12 19:22:59,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:22:59,513 INFO L93 Difference]: Finished difference Result 6863 states and 23893 transitions. [2021-08-12 19:22:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-12 19:22:59,514 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 [2021-08-12 19:22:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:22:59,537 INFO L225 Difference]: With dead ends: 6863 [2021-08-12 19:22:59,537 INFO L226 Difference]: Without dead ends: 6636 [2021-08-12 19:22:59,540 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 695.5ms TimeCoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:22:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-08-12 19:22:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6132. [2021-08-12 19:22:59,917 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) [2021-08-12 19:22:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21462 transitions. [2021-08-12 19:22:59,943 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21462 transitions. Word has length 47 [2021-08-12 19:22:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:22:59,944 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21462 transitions. [2021-08-12 19:22:59,944 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) [2021-08-12 19:22:59,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21462 transitions. [2021-08-12 19:22:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:22:59,953 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:22:59,954 INFO L550 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] [2021-08-12 19:22:59,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-12 19:22:59,954 INFO L430 AbstractCegarLoop]: === Iteration 112 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:22:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:22:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash 818403224, now seen corresponding path program 112 times [2021-08-12 19:22:59,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:22:59,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018118236] [2021-08-12 19:22:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:22:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:00,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:00,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018118236] [2021-08-12 19:23:00,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018118236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:00,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:00,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:23:00,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76454247] [2021-08-12 19:23:00,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:23:00,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:00,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:23:00,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:23:00,180 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) [2021-08-12 19:23:02,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:02,568 INFO L93 Difference]: Finished difference Result 6887 states and 23897 transitions. [2021-08-12 19:23:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-12 19:23:02,568 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 [2021-08-12 19:23:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:02,596 INFO L225 Difference]: With dead ends: 6887 [2021-08-12 19:23:02,596 INFO L226 Difference]: Without dead ends: 6748 [2021-08-12 19:23:02,598 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 684.9ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:23:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-08-12 19:23:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 6138. [2021-08-12 19:23:03,000 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) [2021-08-12 19:23:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-08-12 19:23:03,020 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-08-12 19:23:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:03,020 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-08-12 19:23:03,020 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) [2021-08-12 19:23:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-08-12 19:23:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:03,028 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:03,028 INFO L550 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] [2021-08-12 19:23:03,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-12 19:23:03,028 INFO L430 AbstractCegarLoop]: === Iteration 113 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:03,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:03,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1958867850, now seen corresponding path program 113 times [2021-08-12 19:23:03,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:03,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240940011] [2021-08-12 19:23:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:03,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:03,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240940011] [2021-08-12 19:23:03,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240940011] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:03,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:03,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:03,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826592365] [2021-08-12 19:23:03,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:03,281 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) [2021-08-12 19:23:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:05,735 INFO L93 Difference]: Finished difference Result 7037 states and 24319 transitions. [2021-08-12 19:23:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:23:05,735 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 [2021-08-12 19:23:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:05,757 INFO L225 Difference]: With dead ends: 7037 [2021-08-12 19:23:05,758 INFO L226 Difference]: Without dead ends: 6946 [2021-08-12 19:23:05,759 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 765.5ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:23:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-08-12 19:23:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6138. [2021-08-12 19:23:06,129 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) [2021-08-12 19:23:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21483 transitions. [2021-08-12 19:23:06,152 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21483 transitions. Word has length 47 [2021-08-12 19:23:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:06,153 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21483 transitions. [2021-08-12 19:23:06,153 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) [2021-08-12 19:23:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21483 transitions. [2021-08-12 19:23:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:06,161 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:06,161 INFO L550 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] [2021-08-12 19:23:06,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-12 19:23:06,161 INFO L430 AbstractCegarLoop]: === Iteration 114 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:06,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1524838504, now seen corresponding path program 114 times [2021-08-12 19:23:06,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:06,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580020221] [2021-08-12 19:23:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:06,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:06,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580020221] [2021-08-12 19:23:06,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580020221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:06,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:06,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:06,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362446383] [2021-08-12 19:23:06,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:06,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:06,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:06,403 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) [2021-08-12 19:23:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:08,916 INFO L93 Difference]: Finished difference Result 6946 states and 24048 transitions. [2021-08-12 19:23:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:23:08,916 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 [2021-08-12 19:23:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:08,938 INFO L225 Difference]: With dead ends: 6946 [2021-08-12 19:23:08,939 INFO L226 Difference]: Without dead ends: 6815 [2021-08-12 19:23:08,941 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 718.4ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:23:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-08-12 19:23:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6138. [2021-08-12 19:23:09,339 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) [2021-08-12 19:23:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 21477 transitions. [2021-08-12 19:23:09,363 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 21477 transitions. Word has length 47 [2021-08-12 19:23:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:09,363 INFO L482 AbstractCegarLoop]: Abstraction has 6138 states and 21477 transitions. [2021-08-12 19:23:09,363 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) [2021-08-12 19:23:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 21477 transitions. [2021-08-12 19:23:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:09,373 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:09,373 INFO L550 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] [2021-08-12 19:23:09,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-12 19:23:09,373 INFO L430 AbstractCegarLoop]: === Iteration 115 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:09,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:09,373 INFO L82 PathProgramCache]: Analyzing trace with hash 984588342, now seen corresponding path program 115 times [2021-08-12 19:23:09,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:09,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389243340] [2021-08-12 19:23:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:09,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:09,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389243340] [2021-08-12 19:23:09,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389243340] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:09,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:09,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:23:09,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408087910] [2021-08-12 19:23:09,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:23:09,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:09,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:23:09,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:23:09,643 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) [2021-08-12 19:23:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:14,786 INFO L93 Difference]: Finished difference Result 9357 states and 32757 transitions. [2021-08-12 19:23:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-12 19:23:14,786 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 [2021-08-12 19:23:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:14,813 INFO L225 Difference]: With dead ends: 9357 [2021-08-12 19:23:14,813 INFO L226 Difference]: Without dead ends: 9218 [2021-08-12 19:23:14,815 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1528.7ms TimeCoverageRelationStatistics Valid=404, Invalid=4152, Unknown=0, NotChecked=0, Total=4556 [2021-08-12 19:23:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2021-08-12 19:23:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 6184. [2021-08-12 19:23:15,228 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) [2021-08-12 19:23:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21612 transitions. [2021-08-12 19:23:15,256 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21612 transitions. Word has length 47 [2021-08-12 19:23:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:15,257 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21612 transitions. [2021-08-12 19:23:15,257 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) [2021-08-12 19:23:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21612 transitions. [2021-08-12 19:23:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:15,267 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:15,267 INFO L550 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] [2021-08-12 19:23:15,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-12 19:23:15,268 INFO L430 AbstractCegarLoop]: === Iteration 116 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash 971056920, now seen corresponding path program 116 times [2021-08-12 19:23:15,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:15,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763806655] [2021-08-12 19:23:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:15,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:15,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763806655] [2021-08-12 19:23:15,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763806655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:15,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:15,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:15,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402130433] [2021-08-12 19:23:15,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:15,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:15,523 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) [2021-08-12 19:23:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:21,350 INFO L93 Difference]: Finished difference Result 10527 states and 37112 transitions. [2021-08-12 19:23:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-12 19:23:21,350 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 [2021-08-12 19:23:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:21,380 INFO L225 Difference]: With dead ends: 10527 [2021-08-12 19:23:21,380 INFO L226 Difference]: Without dead ends: 10436 [2021-08-12 19:23:21,383 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1850.6ms TimeCoverageRelationStatistics Valid=531, Invalid=5019, Unknown=0, NotChecked=0, Total=5550 [2021-08-12 19:23:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10436 states. [2021-08-12 19:23:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10436 to 6188. [2021-08-12 19:23:21,808 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) [2021-08-12 19:23:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 21620 transitions. [2021-08-12 19:23:21,832 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 21620 transitions. Word has length 47 [2021-08-12 19:23:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:21,832 INFO L482 AbstractCegarLoop]: Abstraction has 6188 states and 21620 transitions. [2021-08-12 19:23:21,833 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) [2021-08-12 19:23:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 21620 transitions. [2021-08-12 19:23:21,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:21,842 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:21,842 INFO L550 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] [2021-08-12 19:23:21,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-12 19:23:21,842 INFO L430 AbstractCegarLoop]: === Iteration 117 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash 120405012, now seen corresponding path program 117 times [2021-08-12 19:23:21,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:21,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66115627] [2021-08-12 19:23:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:22,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:22,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66115627] [2021-08-12 19:23:22,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66115627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:22,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:22,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:22,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534233649] [2021-08-12 19:23:22,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:22,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:22,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:22,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:22,105 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) [2021-08-12 19:23:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:27,740 INFO L93 Difference]: Finished difference Result 10606 states and 37528 transitions. [2021-08-12 19:23:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-12 19:23:27,741 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 [2021-08-12 19:23:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:27,770 INFO L225 Difference]: With dead ends: 10606 [2021-08-12 19:23:27,770 INFO L226 Difference]: Without dead ends: 10497 [2021-08-12 19:23:27,773 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1728.8ms TimeCoverageRelationStatistics Valid=484, Invalid=4628, Unknown=0, NotChecked=0, Total=5112 [2021-08-12 19:23:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-08-12 19:23:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 6146. [2021-08-12 19:23:28,190 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) [2021-08-12 19:23:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 21495 transitions. [2021-08-12 19:23:28,213 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 21495 transitions. Word has length 47 [2021-08-12 19:23:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:28,213 INFO L482 AbstractCegarLoop]: Abstraction has 6146 states and 21495 transitions. [2021-08-12 19:23:28,213 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) [2021-08-12 19:23:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 21495 transitions. [2021-08-12 19:23:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:28,222 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:28,222 INFO L550 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] [2021-08-12 19:23:28,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-12 19:23:28,222 INFO L430 AbstractCegarLoop]: === Iteration 118 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash 21038872, now seen corresponding path program 118 times [2021-08-12 19:23:28,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:28,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362138251] [2021-08-12 19:23:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:28,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:28,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362138251] [2021-08-12 19:23:28,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362138251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:28,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:28,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:28,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596354927] [2021-08-12 19:23:28,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:28,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:28,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:28,460 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) [2021-08-12 19:23:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:31,269 INFO L93 Difference]: Finished difference Result 7098 states and 24511 transitions. [2021-08-12 19:23:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-12 19:23:31,269 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 [2021-08-12 19:23:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:31,291 INFO L225 Difference]: With dead ends: 7098 [2021-08-12 19:23:31,291 INFO L226 Difference]: Without dead ends: 7007 [2021-08-12 19:23:31,292 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 810.3ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:23:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-08-12 19:23:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6148. [2021-08-12 19:23:31,701 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) [2021-08-12 19:23:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21502 transitions. [2021-08-12 19:23:31,726 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21502 transitions. Word has length 47 [2021-08-12 19:23:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:31,726 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21502 transitions. [2021-08-12 19:23:31,726 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) [2021-08-12 19:23:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21502 transitions. [2021-08-12 19:23:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:31,735 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:31,736 INFO L550 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] [2021-08-12 19:23:31,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-12 19:23:31,736 INFO L430 AbstractCegarLoop]: === Iteration 119 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash -302622952, now seen corresponding path program 119 times [2021-08-12 19:23:31,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:31,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621033870] [2021-08-12 19:23:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:31,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:31,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621033870] [2021-08-12 19:23:31,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621033870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:31,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:31,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:31,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147083794] [2021-08-12 19:23:31,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:31,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:31,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:31,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:31,974 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) [2021-08-12 19:23:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:34,668 INFO L93 Difference]: Finished difference Result 7106 states and 24539 transitions. [2021-08-12 19:23:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:23:34,668 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 [2021-08-12 19:23:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:34,698 INFO L225 Difference]: With dead ends: 7106 [2021-08-12 19:23:34,698 INFO L226 Difference]: Without dead ends: 6999 [2021-08-12 19:23:34,701 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 767.0ms TimeCoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:23:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-08-12 19:23:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6148. [2021-08-12 19:23:35,155 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) [2021-08-12 19:23:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21500 transitions. [2021-08-12 19:23:35,175 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21500 transitions. Word has length 47 [2021-08-12 19:23:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:35,175 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21500 transitions. [2021-08-12 19:23:35,175 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) [2021-08-12 19:23:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21500 transitions. [2021-08-12 19:23:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:35,183 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:35,184 INFO L550 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] [2021-08-12 19:23:35,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-12 19:23:35,184 INFO L430 AbstractCegarLoop]: === Iteration 120 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1927389386, now seen corresponding path program 120 times [2021-08-12 19:23:35,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:35,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501651878] [2021-08-12 19:23:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:35,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:35,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501651878] [2021-08-12 19:23:35,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501651878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:35,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:35,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:35,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421612455] [2021-08-12 19:23:35,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:35,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:35,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:35,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:35,420 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) [2021-08-12 19:23:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:38,734 INFO L93 Difference]: Finished difference Result 7687 states and 26631 transitions. [2021-08-12 19:23:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-12 19:23:38,734 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 [2021-08-12 19:23:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:38,757 INFO L225 Difference]: With dead ends: 7687 [2021-08-12 19:23:38,758 INFO L226 Difference]: Without dead ends: 7596 [2021-08-12 19:23:38,760 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 902.1ms TimeCoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2021-08-12 19:23:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-08-12 19:23:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 6252. [2021-08-12 19:23:39,264 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) [2021-08-12 19:23:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21836 transitions. [2021-08-12 19:23:39,291 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21836 transitions. Word has length 47 [2021-08-12 19:23:39,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:39,291 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21836 transitions. [2021-08-12 19:23:39,291 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) [2021-08-12 19:23:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21836 transitions. [2021-08-12 19:23:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:39,302 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:39,302 INFO L550 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] [2021-08-12 19:23:39,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-12 19:23:39,302 INFO L430 AbstractCegarLoop]: === Iteration 121 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1592460308, now seen corresponding path program 121 times [2021-08-12 19:23:39,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:39,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793134274] [2021-08-12 19:23:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:39,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:39,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793134274] [2021-08-12 19:23:39,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793134274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:39,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:39,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:39,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961363211] [2021-08-12 19:23:39,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:39,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:39,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:39,540 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) [2021-08-12 19:23:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:42,856 INFO L93 Difference]: Finished difference Result 7689 states and 26624 transitions. [2021-08-12 19:23:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-12 19:23:42,856 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 [2021-08-12 19:23:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:42,879 INFO L225 Difference]: With dead ends: 7689 [2021-08-12 19:23:42,879 INFO L226 Difference]: Without dead ends: 7592 [2021-08-12 19:23:42,881 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 869.0ms TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:23:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-08-12 19:23:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6232. [2021-08-12 19:23:43,414 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) [2021-08-12 19:23:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21792 transitions. [2021-08-12 19:23:43,439 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21792 transitions. Word has length 47 [2021-08-12 19:23:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:43,439 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21792 transitions. [2021-08-12 19:23:43,439 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) [2021-08-12 19:23:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21792 transitions. [2021-08-12 19:23:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:43,449 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:43,449 INFO L550 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] [2021-08-12 19:23:43,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-12 19:23:43,449 INFO L430 AbstractCegarLoop]: === Iteration 122 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1891351986, now seen corresponding path program 122 times [2021-08-12 19:23:43,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:43,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453456203] [2021-08-12 19:23:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:43,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:43,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453456203] [2021-08-12 19:23:43,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453456203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:43,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:43,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:43,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837521630] [2021-08-12 19:23:43,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:43,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:43,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:43,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:43,681 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) [2021-08-12 19:23:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:46,443 INFO L93 Difference]: Finished difference Result 7071 states and 24462 transitions. [2021-08-12 19:23:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:23:46,444 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 [2021-08-12 19:23:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:46,465 INFO L225 Difference]: With dead ends: 7071 [2021-08-12 19:23:46,465 INFO L226 Difference]: Without dead ends: 6972 [2021-08-12 19:23:46,467 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 709.0ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:23:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2021-08-12 19:23:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6246. [2021-08-12 19:23:46,913 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) [2021-08-12 19:23:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 21819 transitions. [2021-08-12 19:23:46,935 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 21819 transitions. Word has length 47 [2021-08-12 19:23:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:46,936 INFO L482 AbstractCegarLoop]: Abstraction has 6246 states and 21819 transitions. [2021-08-12 19:23:46,936 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) [2021-08-12 19:23:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 21819 transitions. [2021-08-12 19:23:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:46,944 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:46,944 INFO L550 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] [2021-08-12 19:23:46,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-12 19:23:46,945 INFO L430 AbstractCegarLoop]: === Iteration 123 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:46,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:46,945 INFO L82 PathProgramCache]: Analyzing trace with hash 165931476, now seen corresponding path program 123 times [2021-08-12 19:23:46,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:46,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401607523] [2021-08-12 19:23:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:47,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:47,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401607523] [2021-08-12 19:23:47,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401607523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:47,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:47,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:47,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331179232] [2021-08-12 19:23:47,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:47,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:47,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:47,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:47,186 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) [2021-08-12 19:23:49,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:49,979 INFO L93 Difference]: Finished difference Result 7047 states and 24372 transitions. [2021-08-12 19:23:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:23:49,979 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 [2021-08-12 19:23:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:50,002 INFO L225 Difference]: With dead ends: 7047 [2021-08-12 19:23:50,002 INFO L226 Difference]: Without dead ends: 6940 [2021-08-12 19:23:50,003 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 740.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:23:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2021-08-12 19:23:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6232. [2021-08-12 19:23:50,455 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) [2021-08-12 19:23:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 21786 transitions. [2021-08-12 19:23:50,484 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 21786 transitions. Word has length 47 [2021-08-12 19:23:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:50,484 INFO L482 AbstractCegarLoop]: Abstraction has 6232 states and 21786 transitions. [2021-08-12 19:23:50,484 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) [2021-08-12 19:23:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 21786 transitions. [2021-08-12 19:23:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:50,495 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:50,495 INFO L550 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] [2021-08-12 19:23:50,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-12 19:23:50,495 INFO L430 AbstractCegarLoop]: === Iteration 124 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:50,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1809468076, now seen corresponding path program 124 times [2021-08-12 19:23:50,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:50,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860508076] [2021-08-12 19:23:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:50,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:50,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860508076] [2021-08-12 19:23:50,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860508076] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:50,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:50,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:50,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297552893] [2021-08-12 19:23:50,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:50,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:50,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:50,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:50,729 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) [2021-08-12 19:23:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:53,613 INFO L93 Difference]: Finished difference Result 6958 states and 24176 transitions. [2021-08-12 19:23:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:23:53,613 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 [2021-08-12 19:23:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:53,634 INFO L225 Difference]: With dead ends: 6958 [2021-08-12 19:23:53,634 INFO L226 Difference]: Without dead ends: 6867 [2021-08-12 19:23:53,635 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 816.2ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-08-12 19:23:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2021-08-12 19:23:54,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6236. [2021-08-12 19:23:54,079 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) [2021-08-12 19:23:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21800 transitions. [2021-08-12 19:23:54,102 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21800 transitions. Word has length 47 [2021-08-12 19:23:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:54,102 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21800 transitions. [2021-08-12 19:23:54,102 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) [2021-08-12 19:23:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21800 transitions. [2021-08-12 19:23:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:54,111 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:54,111 INFO L550 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] [2021-08-12 19:23:54,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-12 19:23:54,111 INFO L430 AbstractCegarLoop]: === Iteration 125 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2133129900, now seen corresponding path program 125 times [2021-08-12 19:23:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:54,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908926695] [2021-08-12 19:23:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:54,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:54,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908926695] [2021-08-12 19:23:54,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908926695] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:54,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:54,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:54,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582917194] [2021-08-12 19:23:54,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:54,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:54,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:54,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:54,353 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) [2021-08-12 19:23:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:23:57,192 INFO L93 Difference]: Finished difference Result 6966 states and 24204 transitions. [2021-08-12 19:23:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:23:57,192 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 [2021-08-12 19:23:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:23:57,215 INFO L225 Difference]: With dead ends: 6966 [2021-08-12 19:23:57,215 INFO L226 Difference]: Without dead ends: 6859 [2021-08-12 19:23:57,217 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 786.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:23:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2021-08-12 19:23:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6252. [2021-08-12 19:23:57,699 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) [2021-08-12 19:23:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 21848 transitions. [2021-08-12 19:23:57,721 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 21848 transitions. Word has length 47 [2021-08-12 19:23:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:23:57,721 INFO L482 AbstractCegarLoop]: Abstraction has 6252 states and 21848 transitions. [2021-08-12 19:23:57,721 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) [2021-08-12 19:23:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 21848 transitions. [2021-08-12 19:23:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:23:57,730 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:23:57,730 INFO L550 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] [2021-08-12 19:23:57,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-12 19:23:57,730 INFO L430 AbstractCegarLoop]: === Iteration 126 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:23:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:23:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2077018446, now seen corresponding path program 126 times [2021-08-12 19:23:57,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:23:57,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899470737] [2021-08-12 19:23:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:23:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:23:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:23:57,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:23:57,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899470737] [2021-08-12 19:23:57,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899470737] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:23:57,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:23:57,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:23:57,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434354569] [2021-08-12 19:23:57,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:23:57,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:23:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:23:57,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:23:57,965 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) [2021-08-12 19:24:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:00,918 INFO L93 Difference]: Finished difference Result 6935 states and 24141 transitions. [2021-08-12 19:24:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-12 19:24:00,919 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 [2021-08-12 19:24:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:00,939 INFO L225 Difference]: With dead ends: 6935 [2021-08-12 19:24:00,939 INFO L226 Difference]: Without dead ends: 6772 [2021-08-12 19:24:00,941 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 843.1ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-08-12 19:24:00,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2021-08-12 19:24:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6236. [2021-08-12 19:24:01,438 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) [2021-08-12 19:24:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 21796 transitions. [2021-08-12 19:24:01,462 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 21796 transitions. Word has length 47 [2021-08-12 19:24:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:01,463 INFO L482 AbstractCegarLoop]: Abstraction has 6236 states and 21796 transitions. [2021-08-12 19:24:01,463 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) [2021-08-12 19:24:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 21796 transitions. [2021-08-12 19:24:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:01,473 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:01,473 INFO L550 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] [2021-08-12 19:24:01,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-12 19:24:01,473 INFO L430 AbstractCegarLoop]: === Iteration 127 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:01,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:01,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1926959818, now seen corresponding path program 127 times [2021-08-12 19:24:01,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:01,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643136005] [2021-08-12 19:24:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:01,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:01,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643136005] [2021-08-12 19:24:01,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643136005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:01,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:01,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:01,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759565683] [2021-08-12 19:24:01,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:01,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:01,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:01,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:01,711 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) [2021-08-12 19:24:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:04,618 INFO L93 Difference]: Finished difference Result 7098 states and 24539 transitions. [2021-08-12 19:24:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:24:04,619 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 [2021-08-12 19:24:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:04,640 INFO L225 Difference]: With dead ends: 7098 [2021-08-12 19:24:04,641 INFO L226 Difference]: Without dead ends: 7007 [2021-08-12 19:24:04,642 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 783.3ms TimeCoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:24:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7007 states. [2021-08-12 19:24:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7007 to 6238. [2021-08-12 19:24:05,112 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) [2021-08-12 19:24:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21803 transitions. [2021-08-12 19:24:05,136 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21803 transitions. Word has length 47 [2021-08-12 19:24:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:05,136 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21803 transitions. [2021-08-12 19:24:05,136 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) [2021-08-12 19:24:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21803 transitions. [2021-08-12 19:24:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:05,145 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:05,146 INFO L550 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] [2021-08-12 19:24:05,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-12 19:24:05,146 INFO L430 AbstractCegarLoop]: === Iteration 128 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2044345654, now seen corresponding path program 128 times [2021-08-12 19:24:05,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:05,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857384047] [2021-08-12 19:24:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:05,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:05,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857384047] [2021-08-12 19:24:05,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857384047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:05,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:05,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:05,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69326356] [2021-08-12 19:24:05,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:05,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:05,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:05,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:05,386 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) [2021-08-12 19:24:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:08,302 INFO L93 Difference]: Finished difference Result 7106 states and 24567 transitions. [2021-08-12 19:24:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-12 19:24:08,303 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 [2021-08-12 19:24:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:08,326 INFO L225 Difference]: With dead ends: 7106 [2021-08-12 19:24:08,327 INFO L226 Difference]: Without dead ends: 6999 [2021-08-12 19:24:08,329 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 792.7ms TimeCoverageRelationStatistics Valid=196, Invalid=1874, Unknown=0, NotChecked=0, Total=2070 [2021-08-12 19:24:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-08-12 19:24:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6238. [2021-08-12 19:24:08,804 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) [2021-08-12 19:24:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 21801 transitions. [2021-08-12 19:24:08,831 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 21801 transitions. Word has length 47 [2021-08-12 19:24:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:08,831 INFO L482 AbstractCegarLoop]: Abstraction has 6238 states and 21801 transitions. [2021-08-12 19:24:08,831 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) [2021-08-12 19:24:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 21801 transitions. [2021-08-12 19:24:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:08,840 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:08,841 INFO L550 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] [2021-08-12 19:24:08,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-12 19:24:08,841 INFO L430 AbstractCegarLoop]: === Iteration 129 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash 419579220, now seen corresponding path program 129 times [2021-08-12 19:24:08,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:08,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906377476] [2021-08-12 19:24:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:09,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:09,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906377476] [2021-08-12 19:24:09,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906377476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:09,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:09,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:09,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52558096] [2021-08-12 19:24:09,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:09,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:09,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:09,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:09,082 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) [2021-08-12 19:24:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:12,911 INFO L93 Difference]: Finished difference Result 8207 states and 28474 transitions. [2021-08-12 19:24:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-12 19:24:12,912 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 [2021-08-12 19:24:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:12,939 INFO L225 Difference]: With dead ends: 8207 [2021-08-12 19:24:12,939 INFO L226 Difference]: Without dead ends: 8100 [2021-08-12 19:24:12,942 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 965.5ms TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2021-08-12 19:24:12,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-08-12 19:24:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 6184. [2021-08-12 19:24:13,428 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) [2021-08-12 19:24:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 21614 transitions. [2021-08-12 19:24:13,458 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 21614 transitions. Word has length 47 [2021-08-12 19:24:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:13,458 INFO L482 AbstractCegarLoop]: Abstraction has 6184 states and 21614 transitions. [2021-08-12 19:24:13,458 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) [2021-08-12 19:24:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 21614 transitions. [2021-08-12 19:24:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:13,467 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:13,467 INFO L550 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] [2021-08-12 19:24:13,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-12 19:24:13,467 INFO L430 AbstractCegarLoop]: === Iteration 130 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash -355538382, now seen corresponding path program 130 times [2021-08-12 19:24:13,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:13,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130490421] [2021-08-12 19:24:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:13,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:13,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130490421] [2021-08-12 19:24:13,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130490421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:13,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:13,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:13,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346759506] [2021-08-12 19:24:13,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:13,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:13,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:13,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:13,752 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) [2021-08-12 19:24:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:17,565 INFO L93 Difference]: Finished difference Result 8193 states and 28419 transitions. [2021-08-12 19:24:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-12 19:24:17,566 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 [2021-08-12 19:24:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:17,592 INFO L225 Difference]: With dead ends: 8193 [2021-08-12 19:24:17,592 INFO L226 Difference]: Without dead ends: 8096 [2021-08-12 19:24:17,594 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 967.4ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-08-12 19:24:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-08-12 19:24:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 6148. [2021-08-12 19:24:18,096 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) [2021-08-12 19:24:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21504 transitions. [2021-08-12 19:24:18,118 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21504 transitions. Word has length 47 [2021-08-12 19:24:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:18,118 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21504 transitions. [2021-08-12 19:24:18,118 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) [2021-08-12 19:24:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21504 transitions. [2021-08-12 19:24:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:18,127 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:18,127 INFO L550 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] [2021-08-12 19:24:18,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-12 19:24:18,127 INFO L430 AbstractCegarLoop]: === Iteration 131 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash -56646704, now seen corresponding path program 131 times [2021-08-12 19:24:18,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:18,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409060189] [2021-08-12 19:24:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:18,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:18,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409060189] [2021-08-12 19:24:18,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409060189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:18,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:18,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:18,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665287667] [2021-08-12 19:24:18,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:18,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:18,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:18,362 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) [2021-08-12 19:24:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:21,233 INFO L93 Difference]: Finished difference Result 7018 states and 24275 transitions. [2021-08-12 19:24:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-12 19:24:21,233 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 [2021-08-12 19:24:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:21,258 INFO L225 Difference]: With dead ends: 7018 [2021-08-12 19:24:21,259 INFO L226 Difference]: Without dead ends: 6919 [2021-08-12 19:24:21,261 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 733.0ms TimeCoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:24:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-08-12 19:24:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 6160. [2021-08-12 19:24:21,785 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) [2021-08-12 19:24:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6160 states to 6160 states and 21532 transitions. [2021-08-12 19:24:21,806 INFO L78 Accepts]: Start accepts. Automaton has 6160 states and 21532 transitions. Word has length 47 [2021-08-12 19:24:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:21,806 INFO L482 AbstractCegarLoop]: Abstraction has 6160 states and 21532 transitions. [2021-08-12 19:24:21,806 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) [2021-08-12 19:24:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states and 21532 transitions. [2021-08-12 19:24:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:21,814 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:21,815 INFO L550 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] [2021-08-12 19:24:21,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-12 19:24:21,815 INFO L430 AbstractCegarLoop]: === Iteration 132 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:21,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:21,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1782067214, now seen corresponding path program 132 times [2021-08-12 19:24:21,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:21,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683632504] [2021-08-12 19:24:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:22,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:22,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683632504] [2021-08-12 19:24:22,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683632504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:22,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:22,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:22,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668401632] [2021-08-12 19:24:22,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:22,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:22,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:22,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:22,048 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) [2021-08-12 19:24:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:24,908 INFO L93 Difference]: Finished difference Result 6994 states and 24185 transitions. [2021-08-12 19:24:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-12 19:24:24,908 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 [2021-08-12 19:24:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:24,935 INFO L225 Difference]: With dead ends: 6994 [2021-08-12 19:24:24,935 INFO L226 Difference]: Without dead ends: 6893 [2021-08-12 19:24:24,938 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 702.5ms TimeCoverageRelationStatistics Valid=174, Invalid=1718, Unknown=0, NotChecked=0, Total=1892 [2021-08-12 19:24:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2021-08-12 19:24:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 6152. [2021-08-12 19:24:25,403 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) [2021-08-12 19:24:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 21512 transitions. [2021-08-12 19:24:25,427 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 21512 transitions. Word has length 47 [2021-08-12 19:24:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:25,427 INFO L482 AbstractCegarLoop]: Abstraction has 6152 states and 21512 transitions. [2021-08-12 19:24:25,427 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) [2021-08-12 19:24:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 21512 transitions. [2021-08-12 19:24:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:25,436 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:25,436 INFO L550 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] [2021-08-12 19:24:25,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-12 19:24:25,436 INFO L430 AbstractCegarLoop]: === Iteration 133 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:25,436 INFO L82 PathProgramCache]: Analyzing trace with hash -706322650, now seen corresponding path program 133 times [2021-08-12 19:24:25,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:25,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810554095] [2021-08-12 19:24:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:25,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:25,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810554095] [2021-08-12 19:24:25,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810554095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:25,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:25,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:25,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016345705] [2021-08-12 19:24:25,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:25,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:25,721 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) [2021-08-12 19:24:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:28,618 INFO L93 Difference]: Finished difference Result 6749 states and 23506 transitions. [2021-08-12 19:24:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-12 19:24:28,619 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 [2021-08-12 19:24:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:28,640 INFO L225 Difference]: With dead ends: 6749 [2021-08-12 19:24:28,640 INFO L226 Difference]: Without dead ends: 6602 [2021-08-12 19:24:28,642 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 776.4ms TimeCoverageRelationStatistics Valid=186, Invalid=1794, Unknown=0, NotChecked=0, Total=1980 [2021-08-12 19:24:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2021-08-12 19:24:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6164. [2021-08-12 19:24:29,100 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) [2021-08-12 19:24:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6164 states to 6164 states and 21542 transitions. [2021-08-12 19:24:29,125 INFO L78 Accepts]: Start accepts. Automaton has 6164 states and 21542 transitions. Word has length 47 [2021-08-12 19:24:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:29,126 INFO L482 AbstractCegarLoop]: Abstraction has 6164 states and 21542 transitions. [2021-08-12 19:24:29,126 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) [2021-08-12 19:24:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6164 states and 21542 transitions. [2021-08-12 19:24:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:29,134 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:29,135 INFO L550 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] [2021-08-12 19:24:29,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-12 19:24:29,135 INFO L430 AbstractCegarLoop]: === Iteration 134 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:29,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:29,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1645191940, now seen corresponding path program 134 times [2021-08-12 19:24:29,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:29,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171729498] [2021-08-12 19:24:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:29,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:29,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171729498] [2021-08-12 19:24:29,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171729498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:29,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:29,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:29,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929443125] [2021-08-12 19:24:29,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:29,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:29,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:29,367 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) [2021-08-12 19:24:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:32,328 INFO L93 Difference]: Finished difference Result 6869 states and 23809 transitions. [2021-08-12 19:24:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-12 19:24:32,328 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 [2021-08-12 19:24:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:32,355 INFO L225 Difference]: With dead ends: 6869 [2021-08-12 19:24:32,355 INFO L226 Difference]: Without dead ends: 6770 [2021-08-12 19:24:32,357 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 690.4ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-08-12 19:24:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-08-12 19:24:32,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 6170. [2021-08-12 19:24:32,841 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) [2021-08-12 19:24:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 21557 transitions. [2021-08-12 19:24:32,868 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 21557 transitions. Word has length 47 [2021-08-12 19:24:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:32,869 INFO L482 AbstractCegarLoop]: Abstraction has 6170 states and 21557 transitions. [2021-08-12 19:24:32,869 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) [2021-08-12 19:24:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 21557 transitions. [2021-08-12 19:24:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:32,877 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:32,877 INFO L550 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] [2021-08-12 19:24:32,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-12 19:24:32,878 INFO L430 AbstractCegarLoop]: === Iteration 135 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash -80228570, now seen corresponding path program 135 times [2021-08-12 19:24:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:32,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243761238] [2021-08-12 19:24:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:33,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:33,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243761238] [2021-08-12 19:24:33,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243761238] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:33,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:33,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:24:33,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927065420] [2021-08-12 19:24:33,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:24:33,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:33,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:24:33,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:24:33,106 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) [2021-08-12 19:24:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:35,965 INFO L93 Difference]: Finished difference Result 6770 states and 23504 transitions. [2021-08-12 19:24:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:24:35,966 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 [2021-08-12 19:24:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:35,987 INFO L225 Difference]: With dead ends: 6770 [2021-08-12 19:24:35,987 INFO L226 Difference]: Without dead ends: 6639 [2021-08-12 19:24:35,988 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 656.2ms TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2021-08-12 19:24:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-08-12 19:24:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6132. [2021-08-12 19:24:36,459 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) [2021-08-12 19:24:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 21468 transitions. [2021-08-12 19:24:36,486 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 21468 transitions. Word has length 47 [2021-08-12 19:24:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:36,487 INFO L482 AbstractCegarLoop]: Abstraction has 6132 states and 21468 transitions. [2021-08-12 19:24:36,487 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) [2021-08-12 19:24:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 21468 transitions. [2021-08-12 19:24:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:36,495 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:36,495 INFO L550 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] [2021-08-12 19:24:36,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-12 19:24:36,496 INFO L430 AbstractCegarLoop]: === Iteration 136 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:36,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:36,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1751248534, now seen corresponding path program 136 times [2021-08-12 19:24:36,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:36,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142410560] [2021-08-12 19:24:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:36,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:36,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142410560] [2021-08-12 19:24:36,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142410560] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:36,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:36,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:24:36,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596293830] [2021-08-12 19:24:36,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:24:36,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:36,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:24:36,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:24:36,693 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) [2021-08-12 19:24:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:39,488 INFO L93 Difference]: Finished difference Result 6671 states and 23219 transitions. [2021-08-12 19:24:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-12 19:24:39,488 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 [2021-08-12 19:24:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:39,509 INFO L225 Difference]: With dead ends: 6671 [2021-08-12 19:24:39,509 INFO L226 Difference]: Without dead ends: 6532 [2021-08-12 19:24:39,510 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 582.1ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-08-12 19:24:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2021-08-12 19:24:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6148. [2021-08-12 19:24:39,987 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) [2021-08-12 19:24:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 21516 transitions. [2021-08-12 19:24:40,014 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 21516 transitions. Word has length 47 [2021-08-12 19:24:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:40,014 INFO L482 AbstractCegarLoop]: Abstraction has 6148 states and 21516 transitions. [2021-08-12 19:24:40,014 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) [2021-08-12 19:24:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 21516 transitions. [2021-08-12 19:24:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:40,024 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:40,024 INFO L550 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] [2021-08-12 19:24:40,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-12 19:24:40,024 INFO L430 AbstractCegarLoop]: === Iteration 137 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1026022540, now seen corresponding path program 137 times [2021-08-12 19:24:40,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:40,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623878705] [2021-08-12 19:24:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:40,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:40,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623878705] [2021-08-12 19:24:40,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623878705] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:40,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:40,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:24:40,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823241012] [2021-08-12 19:24:40,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:24:40,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:40,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:24:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:24:40,234 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) [2021-08-12 19:24:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:43,123 INFO L93 Difference]: Finished difference Result 6730 states and 23378 transitions. [2021-08-12 19:24:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-12 19:24:43,124 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 [2021-08-12 19:24:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:43,145 INFO L225 Difference]: With dead ends: 6730 [2021-08-12 19:24:43,146 INFO L226 Difference]: Without dead ends: 6639 [2021-08-12 19:24:43,147 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 640.5ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:24:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-08-12 19:24:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6212. [2021-08-12 19:24:43,678 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) [2021-08-12 19:24:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21732 transitions. [2021-08-12 19:24:43,700 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21732 transitions. Word has length 47 [2021-08-12 19:24:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:43,701 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21732 transitions. [2021-08-12 19:24:43,701 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) [2021-08-12 19:24:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21732 transitions. [2021-08-12 19:24:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:43,710 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:43,710 INFO L550 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] [2021-08-12 19:24:43,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-12 19:24:43,710 INFO L430 AbstractCegarLoop]: === Iteration 138 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:43,710 INFO L82 PathProgramCache]: Analyzing trace with hash -591993194, now seen corresponding path program 138 times [2021-08-12 19:24:43,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:43,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854124445] [2021-08-12 19:24:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:43,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:43,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854124445] [2021-08-12 19:24:43,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854124445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:43,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:43,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:24:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190329348] [2021-08-12 19:24:43,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:24:43,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:24:43,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:24:43,920 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) [2021-08-12 19:24:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:46,813 INFO L93 Difference]: Finished difference Result 6639 states and 23107 transitions. [2021-08-12 19:24:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-12 19:24:46,814 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 [2021-08-12 19:24:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:46,836 INFO L225 Difference]: With dead ends: 6639 [2021-08-12 19:24:46,836 INFO L226 Difference]: Without dead ends: 6508 [2021-08-12 19:24:46,838 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 650.4ms TimeCoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2021-08-12 19:24:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-08-12 19:24:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6212. [2021-08-12 19:24:47,392 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) [2021-08-12 19:24:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-08-12 19:24:47,417 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-08-12 19:24:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:47,417 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-08-12 19:24:47,417 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) [2021-08-12 19:24:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-08-12 19:24:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:47,426 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:47,426 INFO L550 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] [2021-08-12 19:24:47,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-12 19:24:47,426 INFO L430 AbstractCegarLoop]: === Iteration 139 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:47,427 INFO L82 PathProgramCache]: Analyzing trace with hash 969440292, now seen corresponding path program 139 times [2021-08-12 19:24:47,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:47,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922209562] [2021-08-12 19:24:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:47,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:47,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922209562] [2021-08-12 19:24:47,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922209562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:47,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:47,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:24:47,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14054810] [2021-08-12 19:24:47,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:24:47,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:47,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:24:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:24:47,684 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) [2021-08-12 19:24:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:50,650 INFO L93 Difference]: Finished difference Result 6682 states and 23218 transitions. [2021-08-12 19:24:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-12 19:24:50,650 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 [2021-08-12 19:24:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:50,671 INFO L225 Difference]: With dead ends: 6682 [2021-08-12 19:24:50,671 INFO L226 Difference]: Without dead ends: 6591 [2021-08-12 19:24:50,673 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 720.0ms TimeCoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2021-08-12 19:24:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-08-12 19:24:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6212. [2021-08-12 19:24:51,224 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) [2021-08-12 19:24:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6212 states to 6212 states and 21708 transitions. [2021-08-12 19:24:51,245 INFO L78 Accepts]: Start accepts. Automaton has 6212 states and 21708 transitions. Word has length 47 [2021-08-12 19:24:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:51,245 INFO L482 AbstractCegarLoop]: Abstraction has 6212 states and 21708 transitions. [2021-08-12 19:24:51,246 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) [2021-08-12 19:24:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6212 states and 21708 transitions. [2021-08-12 19:24:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:51,254 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:51,254 INFO L550 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] [2021-08-12 19:24:51,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-12 19:24:51,255 INFO L430 AbstractCegarLoop]: === Iteration 140 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1403469638, now seen corresponding path program 140 times [2021-08-12 19:24:51,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:51,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872574446] [2021-08-12 19:24:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:51,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:51,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872574446] [2021-08-12 19:24:51,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872574446] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:51,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:51,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:24:51,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404564647] [2021-08-12 19:24:51,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:24:51,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:24:51,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:24:51,465 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) [2021-08-12 19:24:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:54,386 INFO L93 Difference]: Finished difference Result 6690 states and 23246 transitions. [2021-08-12 19:24:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-12 19:24:54,386 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 [2021-08-12 19:24:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:54,412 INFO L225 Difference]: With dead ends: 6690 [2021-08-12 19:24:54,412 INFO L226 Difference]: Without dead ends: 6583 [2021-08-12 19:24:54,414 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 627.2ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-08-12 19:24:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-08-12 19:24:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6228. [2021-08-12 19:24:54,993 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) [2021-08-12 19:24:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 21756 transitions. [2021-08-12 19:24:55,018 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 21756 transitions. Word has length 47 [2021-08-12 19:24:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:55,019 INFO L482 AbstractCegarLoop]: Abstraction has 6228 states and 21756 transitions. [2021-08-12 19:24:55,019 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) [2021-08-12 19:24:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 21756 transitions. [2021-08-12 19:24:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:55,028 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:55,028 INFO L550 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] [2021-08-12 19:24:55,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-12 19:24:55,028 INFO L430 AbstractCegarLoop]: === Iteration 141 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1618563950, now seen corresponding path program 141 times [2021-08-12 19:24:55,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:55,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595056757] [2021-08-12 19:24:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:55,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:55,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595056757] [2021-08-12 19:24:55,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595056757] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:55,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:55,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:24:55,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377650767] [2021-08-12 19:24:55,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:24:55,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:24:55,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:24:55,241 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) [2021-08-12 19:24:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:24:58,096 INFO L93 Difference]: Finished difference Result 6583 states and 22919 transitions. [2021-08-12 19:24:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-12 19:24:58,097 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 [2021-08-12 19:24:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:24:58,118 INFO L225 Difference]: With dead ends: 6583 [2021-08-12 19:24:58,118 INFO L226 Difference]: Without dead ends: 6312 [2021-08-12 19:24:58,119 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 593.1ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-08-12 19:24:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6312 states. [2021-08-12 19:24:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6312 to 6104. [2021-08-12 19:24:58,586 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) [2021-08-12 19:24:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 21388 transitions. [2021-08-12 19:24:58,609 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 21388 transitions. Word has length 47 [2021-08-12 19:24:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:24:58,609 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 21388 transitions. [2021-08-12 19:24:58,610 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) [2021-08-12 19:24:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 21388 transitions. [2021-08-12 19:24:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:24:58,618 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:24:58,618 INFO L550 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] [2021-08-12 19:24:58,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-12 19:24:58,618 INFO L430 AbstractCegarLoop]: === Iteration 142 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:24:58,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:24:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1913602850, now seen corresponding path program 142 times [2021-08-12 19:24:58,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:24:58,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25807269] [2021-08-12 19:24:58,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:24:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:24:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:24:58,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:24:58,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25807269] [2021-08-12 19:24:58,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25807269] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:24:58,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:24:58,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:24:58,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873473865] [2021-08-12 19:24:58,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:24:58,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:24:58,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:24:58,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:24:58,879 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) [2021-08-12 19:25:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:05,106 INFO L93 Difference]: Finished difference Result 10137 states and 35581 transitions. [2021-08-12 19:25:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-08-12 19:25:05,106 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 [2021-08-12 19:25:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:05,139 INFO L225 Difference]: With dead ends: 10137 [2021-08-12 19:25:05,139 INFO L226 Difference]: Without dead ends: 9908 [2021-08-12 19:25:05,143 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 1733.3ms TimeCoverageRelationStatistics Valid=518, Invalid=5334, Unknown=0, NotChecked=0, Total=5852 [2021-08-12 19:25:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2021-08-12 19:25:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 6307. [2021-08-12 19:25:05,745 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) [2021-08-12 19:25:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6307 states to 6307 states and 22097 transitions. [2021-08-12 19:25:05,771 INFO L78 Accepts]: Start accepts. Automaton has 6307 states and 22097 transitions. Word has length 47 [2021-08-12 19:25:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:05,772 INFO L482 AbstractCegarLoop]: Abstraction has 6307 states and 22097 transitions. [2021-08-12 19:25:05,772 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) [2021-08-12 19:25:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6307 states and 22097 transitions. [2021-08-12 19:25:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:25:05,781 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:05,781 INFO L550 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] [2021-08-12 19:25:05,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-12 19:25:05,781 INFO L430 AbstractCegarLoop]: === Iteration 143 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1598110108, now seen corresponding path program 143 times [2021-08-12 19:25:05,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:05,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828814311] [2021-08-12 19:25:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:05,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:05,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828814311] [2021-08-12 19:25:05,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828814311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:05,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:05,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:25:05,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122053213] [2021-08-12 19:25:05,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:25:05,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:05,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:25:05,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:25:05,993 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) [2021-08-12 19:25:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:15,440 INFO L93 Difference]: Finished difference Result 12886 states and 45404 transitions. [2021-08-12 19:25:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-08-12 19:25:15,440 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 [2021-08-12 19:25:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:15,479 INFO L225 Difference]: With dead ends: 12886 [2021-08-12 19:25:15,479 INFO L226 Difference]: Without dead ends: 12525 [2021-08-12 19:25:15,482 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5304 ImplicationChecksByTransitivity, 3469.4ms TimeCoverageRelationStatistics Valid=1263, Invalid=13743, Unknown=0, NotChecked=0, Total=15006 [2021-08-12 19:25:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2021-08-12 19:25:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 7156. [2021-08-12 19:25:16,154 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) [2021-08-12 19:25:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 25237 transitions. [2021-08-12 19:25:16,191 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 25237 transitions. Word has length 47 [2021-08-12 19:25:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:16,191 INFO L482 AbstractCegarLoop]: Abstraction has 7156 states and 25237 transitions. [2021-08-12 19:25:16,191 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) [2021-08-12 19:25:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 25237 transitions. [2021-08-12 19:25:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:25:16,203 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:16,203 INFO L550 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] [2021-08-12 19:25:16,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-12 19:25:16,203 INFO L430 AbstractCegarLoop]: === Iteration 144 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 747458200, now seen corresponding path program 144 times [2021-08-12 19:25:16,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:16,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599679421] [2021-08-12 19:25:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:16,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:16,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599679421] [2021-08-12 19:25:16,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599679421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:16,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:16,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:25:16,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157127523] [2021-08-12 19:25:16,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:25:16,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:25:16,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:25:16,430 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) [2021-08-12 19:25:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:24,781 INFO L93 Difference]: Finished difference Result 12741 states and 45284 transitions. [2021-08-12 19:25:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-08-12 19:25:24,781 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 [2021-08-12 19:25:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:24,823 INFO L225 Difference]: With dead ends: 12741 [2021-08-12 19:25:24,823 INFO L226 Difference]: Without dead ends: 12536 [2021-08-12 19:25:24,826 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4008 ImplicationChecksByTransitivity, 2818.8ms TimeCoverageRelationStatistics Valid=943, Invalid=10829, Unknown=0, NotChecked=0, Total=11772 [2021-08-12 19:25:24,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2021-08-12 19:25:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 7188. [2021-08-12 19:25:25,496 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) [2021-08-12 19:25:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 25371 transitions. [2021-08-12 19:25:25,528 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 25371 transitions. Word has length 47 [2021-08-12 19:25:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:25,528 INFO L482 AbstractCegarLoop]: Abstraction has 7188 states and 25371 transitions. [2021-08-12 19:25:25,528 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) [2021-08-12 19:25:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 25371 transitions. [2021-08-12 19:25:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:25:25,539 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:25,539 INFO L550 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] [2021-08-12 19:25:25,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-12 19:25:25,539 INFO L430 AbstractCegarLoop]: === Iteration 145 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:25,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:25,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1371701544, now seen corresponding path program 145 times [2021-08-12 19:25:25,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:25,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038459066] [2021-08-12 19:25:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:25,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:25,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038459066] [2021-08-12 19:25:25,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038459066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:25,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:25,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-12 19:25:25,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765446060] [2021-08-12 19:25:25,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-12 19:25:25,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:25,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-12 19:25:25,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-12 19:25:25,765 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) [2021-08-12 19:25:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:33,841 INFO L93 Difference]: Finished difference Result 11888 states and 41422 transitions. [2021-08-12 19:25:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-12 19:25:33,842 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 [2021-08-12 19:25:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:33,875 INFO L225 Difference]: With dead ends: 11888 [2021-08-12 19:25:33,875 INFO L226 Difference]: Without dead ends: 11431 [2021-08-12 19:25:33,878 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 2684.5ms TimeCoverageRelationStatistics Valid=883, Invalid=9623, Unknown=0, NotChecked=0, Total=10506 [2021-08-12 19:25:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2021-08-12 19:25:34,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 7463. [2021-08-12 19:25:34,575 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) [2021-08-12 19:25:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 26327 transitions. [2021-08-12 19:25:34,604 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 26327 transitions. Word has length 47 [2021-08-12 19:25:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:34,605 INFO L482 AbstractCegarLoop]: Abstraction has 7463 states and 26327 transitions. [2021-08-12 19:25:34,605 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) [2021-08-12 19:25:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 26327 transitions. [2021-08-12 19:25:34,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:25:34,615 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:34,615 INFO L550 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] [2021-08-12 19:25:34,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-12 19:25:34,615 INFO L430 AbstractCegarLoop]: === Iteration 146 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 944391290, now seen corresponding path program 146 times [2021-08-12 19:25:34,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:34,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983588966] [2021-08-12 19:25:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:34,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:34,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983588966] [2021-08-12 19:25:34,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983588966] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:34,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:34,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:25:34,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065215235] [2021-08-12 19:25:34,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:25:34,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:25:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:25:34,825 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) [2021-08-12 19:25:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:44,520 INFO L93 Difference]: Finished difference Result 13406 states and 47115 transitions. [2021-08-12 19:25:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-08-12 19:25:44,520 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 [2021-08-12 19:25:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:44,563 INFO L225 Difference]: With dead ends: 13406 [2021-08-12 19:25:44,563 INFO L226 Difference]: Without dead ends: 13078 [2021-08-12 19:25:44,568 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 3476.2ms TimeCoverageRelationStatistics Valid=1198, Invalid=13564, Unknown=0, NotChecked=0, Total=14762 [2021-08-12 19:25:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13078 states. [2021-08-12 19:25:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13078 to 7625. [2021-08-12 19:25:45,345 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) [2021-08-12 19:25:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 26961 transitions. [2021-08-12 19:25:45,384 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 26961 transitions. Word has length 47 [2021-08-12 19:25:45,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:45,385 INFO L482 AbstractCegarLoop]: Abstraction has 7625 states and 26961 transitions. [2021-08-12 19:25:45,385 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) [2021-08-12 19:25:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 26961 transitions. [2021-08-12 19:25:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:25:45,399 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:45,399 INFO L550 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] [2021-08-12 19:25:45,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-12 19:25:45,399 INFO L430 AbstractCegarLoop]: === Iteration 147 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash 93739382, now seen corresponding path program 147 times [2021-08-12 19:25:45,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:45,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940600542] [2021-08-12 19:25:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:45,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:45,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940600542] [2021-08-12 19:25:45,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940600542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:45,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:45,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-12 19:25:45,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114404476] [2021-08-12 19:25:45,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-08-12 19:25:45,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:45,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-12 19:25:45,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:25:45,676 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) [2021-08-12 19:25:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:25:54,894 INFO L93 Difference]: Finished difference Result 13325 states and 47097 transitions. [2021-08-12 19:25:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-08-12 19:25:54,895 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 [2021-08-12 19:25:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:25:54,935 INFO L225 Difference]: With dead ends: 13325 [2021-08-12 19:25:54,936 INFO L226 Difference]: Without dead ends: 13076 [2021-08-12 19:25:54,941 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4525 ImplicationChecksByTransitivity, 3182.4ms TimeCoverageRelationStatistics Valid=1082, Invalid=12028, Unknown=0, NotChecked=0, Total=13110 [2021-08-12 19:25:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13076 states. [2021-08-12 19:25:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13076 to 7557. [2021-08-12 19:25:55,757 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) [2021-08-12 19:25:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 26770 transitions. [2021-08-12 19:25:55,788 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 26770 transitions. Word has length 47 [2021-08-12 19:25:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:25:55,788 INFO L482 AbstractCegarLoop]: Abstraction has 7557 states and 26770 transitions. [2021-08-12 19:25:55,788 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) [2021-08-12 19:25:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 26770 transitions. [2021-08-12 19:25:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:25:55,799 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:25:55,799 INFO L550 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] [2021-08-12 19:25:55,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-12 19:25:55,799 INFO L430 AbstractCegarLoop]: === Iteration 148 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:25:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:25:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1813193950, now seen corresponding path program 148 times [2021-08-12 19:25:55,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:25:55,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191820664] [2021-08-12 19:25:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:25:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:25:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:25:56,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:25:56,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191820664] [2021-08-12 19:25:56,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191820664] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:25:56,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:25:56,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:25:56,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570839830] [2021-08-12 19:25:56,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:25:56,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:25:56,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:25:56,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:25:56,032 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) [2021-08-12 19:26:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:26:03,330 INFO L93 Difference]: Finished difference Result 12057 states and 42497 transitions. [2021-08-12 19:26:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-08-12 19:26:03,330 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 [2021-08-12 19:26:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:26:03,367 INFO L225 Difference]: With dead ends: 12057 [2021-08-12 19:26:03,367 INFO L226 Difference]: Without dead ends: 11928 [2021-08-12 19:26:03,371 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1987.2ms TimeCoverageRelationStatistics Valid=605, Invalid=6705, Unknown=0, NotChecked=0, Total=7310 [2021-08-12 19:26:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2021-08-12 19:26:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 7585. [2021-08-12 19:26:04,165 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) [2021-08-12 19:26:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 26846 transitions. [2021-08-12 19:26:04,195 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 26846 transitions. Word has length 47 [2021-08-12 19:26:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:26:04,195 INFO L482 AbstractCegarLoop]: Abstraction has 7585 states and 26846 transitions. [2021-08-12 19:26:04,195 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) [2021-08-12 19:26:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 26846 transitions. [2021-08-12 19:26:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:26:04,206 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:26:04,206 INFO L550 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] [2021-08-12 19:26:04,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-12 19:26:04,206 INFO L430 AbstractCegarLoop]: === Iteration 149 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:26:04,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:26:04,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1029939612, now seen corresponding path program 149 times [2021-08-12 19:26:04,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:26:04,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591768313] [2021-08-12 19:26:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:26:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:26:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:26:04,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:26:04,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591768313] [2021-08-12 19:26:04,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591768313] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:26:04,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:26:04,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:26:04,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214385695] [2021-08-12 19:26:04,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:26:04,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:26:04,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:26:04,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:26:04,438 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) [2021-08-12 19:26:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:26:14,766 INFO L93 Difference]: Finished difference Result 14121 states and 49892 transitions. [2021-08-12 19:26:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-08-12 19:26:14,766 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 [2021-08-12 19:26:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:26:14,808 INFO L225 Difference]: With dead ends: 14121 [2021-08-12 19:26:14,808 INFO L226 Difference]: Without dead ends: 14030 [2021-08-12 19:26:14,813 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5739 ImplicationChecksByTransitivity, 3623.0ms TimeCoverageRelationStatistics Valid=1316, Invalid=14940, Unknown=0, NotChecked=0, Total=16256 [2021-08-12 19:26:14,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2021-08-12 19:26:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 7583. [2021-08-12 19:26:15,686 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) [2021-08-12 19:26:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 26852 transitions. [2021-08-12 19:26:15,716 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 26852 transitions. Word has length 47 [2021-08-12 19:26:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:26:15,716 INFO L482 AbstractCegarLoop]: Abstraction has 7583 states and 26852 transitions. [2021-08-12 19:26:15,716 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) [2021-08-12 19:26:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 26852 transitions. [2021-08-12 19:26:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-12 19:26:15,727 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:26:15,727 INFO L550 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] [2021-08-12 19:26:15,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-12 19:26:15,727 INFO L430 AbstractCegarLoop]: === Iteration 150 === [thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, thread4Err1INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-12 19:26:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:26:15,727 INFO L82 PathProgramCache]: Analyzing trace with hash 179287704, now seen corresponding path program 150 times [2021-08-12 19:26:15,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:26:15,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849278838] [2021-08-12 19:26:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:26:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:26:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:26:15,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:26:15,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849278838] [2021-08-12 19:26:15,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849278838] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:26:15,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:26:15,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-12 19:26:15,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203074974] [2021-08-12 19:26:15,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-08-12 19:26:15,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:26:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-12 19:26:15,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-08-12 19:26:15,956 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) Received shutdown request... [2021-08-12 19:26:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-08-12 19:26:22,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-12 19:26:22,197 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-12 19:26:22,199 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 19:26:22,200 WARN L188 ceAbstractionStarter]: Timeout [2021-08-12 19:26:22,201 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 07:26:22 BasicIcfg [2021-08-12 19:26:22,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 19:26:22,201 INFO L168 Benchmark]: Toolchain (without parser) took 498109.15 ms. Allocated memory was 203.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 184.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 316.2 MB. Max. memory is 8.0 GB. [2021-08-12 19:26:22,201 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 203.4 MB. Free memory was 185.6 MB in the beginning and 185.5 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 19:26:22,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.84 ms. Allocated memory is still 203.4 MB. Free memory was 184.3 MB in the beginning and 182.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 19:26:22,201 INFO L168 Benchmark]: Boogie Preprocessor took 26.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 181.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 19:26:22,201 INFO L168 Benchmark]: RCFGBuilder took 248.00 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 168.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-12 19:26:22,201 INFO L168 Benchmark]: TraceAbstraction took 497804.04 ms. Allocated memory was 203.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 167.7 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 300.5 MB. Max. memory is 8.0 GB. [2021-08-12 19:26:22,202 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 0.14 ms. Allocated memory is still 203.4 MB. Free memory was 185.6 MB in the beginning and 185.5 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.84 ms. Allocated memory is still 203.4 MB. Free memory was 184.3 MB in the beginning and 182.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.8 MB in the beginning and 181.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 248.00 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 168.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 497804.04 ms. Allocated memory was 203.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 167.7 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 300.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (7583states) and FLOYD_HOARE automaton (currently 78 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (5489 states constructedinput type IntersectNwa). - 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: 497614.2ms, OverallIterations: 150, TraceHistogramMax: 1, EmptinessCheckTime: 1554.6ms, AutomataDifference: 406842.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 552.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32858 SDtfs, 67539 SDslu, 385473 SDs, 0 SdLazy, 265791 SolverSat, 9044 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92177.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7841 GetRequests, 185 SyntacticMatches, 179 SemanticMatches, 7477 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107014 ImplicationChecksByTransitivity, 152192.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7625occurred in iteration=146, InterpolantAutomatonStates: 6243, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48570.9ms AutomataMinimizationTime, 149 MinimizatonAttempts, 183208 StatesRemovedByMinimization, 147 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 128.3ms SsaConstructionTime, 402.4ms SatisfiabilityAnalysisTime, 37443.0ms InterpolantComputationTime, 7050 NumberOfCodeBlocks, 7050 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 6900 ConstructedInterpolants, 0 QuantifiedInterpolants, 95853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 150 InterpolantComputations, 150 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