/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 17:18:26,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 17:18:26,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 17:18:26,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 17:18:26,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 17:18:26,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 17:18:26,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 17:18:26,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 17:18:26,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 17:18:26,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 17:18:26,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 17:18:26,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 17:18:26,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 17:18:26,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 17:18:26,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 17:18:26,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 17:18:26,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 17:18:26,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 17:18:26,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 17:18:26,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 17:18:26,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 17:18:26,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 17:18:26,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 17:18:26,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 17:18:26,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 17:18:26,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 17:18:26,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 17:18:26,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 17:18:26,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 17:18:26,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 17:18:26,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 17:18:26,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 17:18:26,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 17:18:26,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 17:18:26,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 17:18:26,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 17:18:26,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 17:18:26,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 17:18:26,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 17:18:26,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 17:18:26,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 17:18:26,272 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-Delay.epf [2021-06-16 17:18:26,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 17:18:26,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 17:18:26,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 17:18:26,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 17:18:26,319 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 17:18:26,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 17:18:26,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 17:18:26,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 17:18:26,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 17:18:26,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 17:18:26,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 17:18:26,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 17:18:26,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 17:18:26,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 17:18:26,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 17:18:26,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 17:18:26,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 17:18:26,575 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 17:18:26,575 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 17:18:26,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-06-16 17:18:26,576 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-06-16 17:18:26,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 17:18:26,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 17:18:26,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 17:18:26,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 17:18:26,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 17:18:26,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 17:18:26,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 17:18:26,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 17:18:26,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 17:18:26,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... [2021-06-16 17:18:26,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 17:18:26,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 17:18:26,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 17:18:26,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 17:18:26,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 17:18:26,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 17:18:26,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 17:18:26,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 17:18:26,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 17:18:26,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 17:18:26,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 17:18:26,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 17:18:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 17:18:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 17:18:26,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 17:18:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 17:18:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 17:18:26,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-16 17:18:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-16 17:18:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-16 17:18:26,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-16 17:18:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-16 17:18:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-16 17:18:26,686 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 17:18:26,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 17:18:26,900 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 17:18:26,901 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:18:26 BoogieIcfgContainer [2021-06-16 17:18:26,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 17:18:26,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 17:18:26,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 17:18:26,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 17:18:26,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:18:26" (1/2) ... [2021-06-16 17:18:26,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a773eb and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 05:18:26, skipping insertion in model container [2021-06-16 17:18:26,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:18:26" (2/2) ... [2021-06-16 17:18:26,906 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-06-16 17:18:26,909 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 17:18:26,909 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 17:18:26,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 17:18:26,910 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 17:18:26,947 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-16 17:18:26,972 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-16 17:18:26,995 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 17:18:26,995 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 17:18:26,995 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 17:18:26,995 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 17:18:26,995 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 17:18:26,995 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 17:18:26,995 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 17:18:26,996 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 17:18:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 12446 states, 9853 states have (on average 2.613112757535776) internal successors, (25747), 12445 states have internal predecessors, (25747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:28,098 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:28,099 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:28,099 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:28,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1032627194, now seen corresponding path program 1 times [2021-06-16 17:18:28,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:28,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304068819] [2021-06-16 17:18:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:28,273 INFO L142 QuantifierPusher]: treesize reduction 14, result has 30.0 percent of original size [2021-06-16 17:18:28,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-16 17:18:28,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-16 17:18:28,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:28,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:28,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:28,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:28,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-16 17:18:28,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:28,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:28,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304068819] [2021-06-16 17:18:28,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304068819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:28,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:28,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 17:18:28,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247676069] [2021-06-16 17:18:28,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:18:28,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:28,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:18:28,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:18:28,347 INFO L87 Difference]: Start difference. First operand has 12446 states, 9853 states have (on average 2.613112757535776) internal successors, (25747), 12445 states have internal predecessors, (25747), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:28,517 INFO L93 Difference]: Finished difference Result 19654 states and 40748 transitions. [2021-06-16 17:18:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:18:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:28,570 INFO L225 Difference]: With dead ends: 19654 [2021-06-16 17:18:28,570 INFO L226 Difference]: Without dead ends: 7539 [2021-06-16 17:18:28,571 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7539 states. [2021-06-16 17:18:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7539 to 7422. [2021-06-16 17:18:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7422 states, 7421 states have (on average 2.496429052688317) internal successors, (18526), 7421 states have internal predecessors, (18526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 18526 transitions. [2021-06-16 17:18:28,842 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 18526 transitions. Word has length 39 [2021-06-16 17:18:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:28,842 INFO L482 AbstractCegarLoop]: Abstraction has 7422 states and 18526 transitions. [2021-06-16 17:18:28,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 18526 transitions. [2021-06-16 17:18:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:28,857 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:28,857 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:28,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 17:18:28,858 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1943058314, now seen corresponding path program 2 times [2021-06-16 17:18:28,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:28,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730380969] [2021-06-16 17:18:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:28,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:28,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:28,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:28,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:28,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:28,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:28,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730380969] [2021-06-16 17:18:28,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730380969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:28,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:28,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 17:18:28,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856763601] [2021-06-16 17:18:28,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:18:28,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:28,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:18:28,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:18:28,986 INFO L87 Difference]: Start difference. First operand 7422 states and 18526 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:29,149 INFO L93 Difference]: Finished difference Result 7751 states and 19247 transitions. [2021-06-16 17:18:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:18:29,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:29,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:29,182 INFO L225 Difference]: With dead ends: 7751 [2021-06-16 17:18:29,182 INFO L226 Difference]: Without dead ends: 7751 [2021-06-16 17:18:29,183 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2021-06-16 17:18:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 7674. [2021-06-16 17:18:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7674 states, 7673 states have (on average 2.490160302358921) internal successors, (19107), 7673 states have internal predecessors, (19107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7674 states to 7674 states and 19107 transitions. [2021-06-16 17:18:29,409 INFO L78 Accepts]: Start accepts. Automaton has 7674 states and 19107 transitions. Word has length 39 [2021-06-16 17:18:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:29,410 INFO L482 AbstractCegarLoop]: Abstraction has 7674 states and 19107 transitions. [2021-06-16 17:18:29,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7674 states and 19107 transitions. [2021-06-16 17:18:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:29,424 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:29,424 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:29,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 17:18:29,425 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash 170935414, now seen corresponding path program 3 times [2021-06-16 17:18:29,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:29,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509644223] [2021-06-16 17:18:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:29,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:29,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:29,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:29,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:29,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:29,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:29,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:29,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:29,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:29,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:29,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:29,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509644223] [2021-06-16 17:18:29,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509644223] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:29,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:29,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:18:29,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043906880] [2021-06-16 17:18:29,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:18:29,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:29,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:18:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:29,462 INFO L87 Difference]: Start difference. First operand 7674 states and 19107 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:29,614 INFO L93 Difference]: Finished difference Result 16386 states and 41489 transitions. [2021-06-16 17:18:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 17:18:29,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:29,658 INFO L225 Difference]: With dead ends: 16386 [2021-06-16 17:18:29,658 INFO L226 Difference]: Without dead ends: 16386 [2021-06-16 17:18:29,659 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16386 states. [2021-06-16 17:18:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16386 to 8688. [2021-06-16 17:18:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8688 states, 8687 states have (on average 2.4884309888338896) internal successors, (21617), 8687 states have internal predecessors, (21617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 21617 transitions. [2021-06-16 17:18:29,982 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 21617 transitions. Word has length 39 [2021-06-16 17:18:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:29,982 INFO L482 AbstractCegarLoop]: Abstraction has 8688 states and 21617 transitions. [2021-06-16 17:18:29,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 21617 transitions. [2021-06-16 17:18:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:30,000 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:30,000 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:30,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 17:18:30,001 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash 927366032, now seen corresponding path program 4 times [2021-06-16 17:18:30,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:30,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727605486] [2021-06-16 17:18:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:30,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:30,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:30,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:30,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727605486] [2021-06-16 17:18:30,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727605486] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:30,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:30,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:18:30,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474188579] [2021-06-16 17:18:30,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:18:30,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:30,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:18:30,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:30,054 INFO L87 Difference]: Start difference. First operand 8688 states and 21617 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:30,242 INFO L93 Difference]: Finished difference Result 18200 states and 47170 transitions. [2021-06-16 17:18:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 17:18:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:30,283 INFO L225 Difference]: With dead ends: 18200 [2021-06-16 17:18:30,283 INFO L226 Difference]: Without dead ends: 18200 [2021-06-16 17:18:30,284 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18200 states. [2021-06-16 17:18:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18200 to 9840. [2021-06-16 17:18:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9840 states, 9839 states have (on average 2.5313548124809433) internal successors, (24906), 9839 states have internal predecessors, (24906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9840 states to 9840 states and 24906 transitions. [2021-06-16 17:18:30,635 INFO L78 Accepts]: Start accepts. Automaton has 9840 states and 24906 transitions. Word has length 39 [2021-06-16 17:18:30,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:30,636 INFO L482 AbstractCegarLoop]: Abstraction has 9840 states and 24906 transitions. [2021-06-16 17:18:30,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 9840 states and 24906 transitions. [2021-06-16 17:18:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:30,652 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:30,652 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:30,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 17:18:30,653 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash -786335362, now seen corresponding path program 5 times [2021-06-16 17:18:30,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:30,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398858646] [2021-06-16 17:18:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:30,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:30,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:30,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:30,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:30,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:30,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398858646] [2021-06-16 17:18:30,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398858646] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:30,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:30,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:18:30,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391962005] [2021-06-16 17:18:30,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:18:30,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:18:30,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:30,710 INFO L87 Difference]: Start difference. First operand 9840 states and 24906 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:30,932 INFO L93 Difference]: Finished difference Result 16727 states and 43263 transitions. [2021-06-16 17:18:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:18:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:30,965 INFO L225 Difference]: With dead ends: 16727 [2021-06-16 17:18:30,965 INFO L226 Difference]: Without dead ends: 16718 [2021-06-16 17:18:30,966 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16718 states. [2021-06-16 17:18:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16718 to 9955. [2021-06-16 17:18:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9954 states have (on average 2.5355635925256177) internal successors, (25239), 9954 states have internal predecessors, (25239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 25239 transitions. [2021-06-16 17:18:31,271 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 25239 transitions. Word has length 39 [2021-06-16 17:18:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:31,271 INFO L482 AbstractCegarLoop]: Abstraction has 9955 states and 25239 transitions. [2021-06-16 17:18:31,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 25239 transitions. [2021-06-16 17:18:31,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:31,293 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:31,293 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:31,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 17:18:31,293 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash -332221590, now seen corresponding path program 6 times [2021-06-16 17:18:31,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:31,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108350844] [2021-06-16 17:18:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:31,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:31,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:31,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:31,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108350844] [2021-06-16 17:18:31,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108350844] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:31,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:31,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:18:31,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337453928] [2021-06-16 17:18:31,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:18:31,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:31,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:18:31,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:31,333 INFO L87 Difference]: Start difference. First operand 9955 states and 25239 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:31,600 INFO L93 Difference]: Finished difference Result 18665 states and 47993 transitions. [2021-06-16 17:18:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 17:18:31,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:31,635 INFO L225 Difference]: With dead ends: 18665 [2021-06-16 17:18:31,635 INFO L226 Difference]: Without dead ends: 18650 [2021-06-16 17:18:31,636 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18650 states. [2021-06-16 17:18:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18650 to 10221. [2021-06-16 17:18:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10221 states, 10220 states have (on average 2.5048923679060664) internal successors, (25600), 10220 states have internal predecessors, (25600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10221 states to 10221 states and 25600 transitions. [2021-06-16 17:18:31,897 INFO L78 Accepts]: Start accepts. Automaton has 10221 states and 25600 transitions. Word has length 39 [2021-06-16 17:18:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:31,897 INFO L482 AbstractCegarLoop]: Abstraction has 10221 states and 25600 transitions. [2021-06-16 17:18:31,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10221 states and 25600 transitions. [2021-06-16 17:18:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:31,913 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:31,913 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:31,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 17:18:31,914 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:31,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1414221664, now seen corresponding path program 7 times [2021-06-16 17:18:31,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:31,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578732448] [2021-06-16 17:18:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:31,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:31,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:31,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:31,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:31,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:31,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578732448] [2021-06-16 17:18:31,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578732448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:31,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:31,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:18:31,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970347687] [2021-06-16 17:18:31,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:18:31,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:18:31,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:31,944 INFO L87 Difference]: Start difference. First operand 10221 states and 25600 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:32,153 INFO L93 Difference]: Finished difference Result 18010 states and 46360 transitions. [2021-06-16 17:18:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 17:18:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:32,181 INFO L225 Difference]: With dead ends: 18010 [2021-06-16 17:18:32,181 INFO L226 Difference]: Without dead ends: 17995 [2021-06-16 17:18:32,182 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17995 states. [2021-06-16 17:18:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17995 to 11135. [2021-06-16 17:18:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11135 states, 11134 states have (on average 2.4921860966409195) internal successors, (27748), 11134 states have internal predecessors, (27748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11135 states to 11135 states and 27748 transitions. [2021-06-16 17:18:32,391 INFO L78 Accepts]: Start accepts. Automaton has 11135 states and 27748 transitions. Word has length 39 [2021-06-16 17:18:32,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:32,391 INFO L482 AbstractCegarLoop]: Abstraction has 11135 states and 27748 transitions. [2021-06-16 17:18:32,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 11135 states and 27748 transitions. [2021-06-16 17:18:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:32,406 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:32,406 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:32,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 17:18:32,406 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1925408156, now seen corresponding path program 8 times [2021-06-16 17:18:32,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:32,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429445004] [2021-06-16 17:18:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:32,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:32,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:32,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:32,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:32,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:32,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:32,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:32,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:32,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:32,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:32,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429445004] [2021-06-16 17:18:32,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429445004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:32,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:32,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:32,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358380596] [2021-06-16 17:18:32,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:32,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:32,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:32,454 INFO L87 Difference]: Start difference. First operand 11135 states and 27748 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:32,768 INFO L93 Difference]: Finished difference Result 19190 states and 50028 transitions. [2021-06-16 17:18:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:18:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:32,800 INFO L225 Difference]: With dead ends: 19190 [2021-06-16 17:18:32,800 INFO L226 Difference]: Without dead ends: 19190 [2021-06-16 17:18:32,801 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:18:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19190 states. [2021-06-16 17:18:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19190 to 11372. [2021-06-16 17:18:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 11371 states have (on average 2.5159616568463634) internal successors, (28609), 11371 states have internal predecessors, (28609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 28609 transitions. [2021-06-16 17:18:33,036 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 28609 transitions. Word has length 39 [2021-06-16 17:18:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:33,037 INFO L482 AbstractCegarLoop]: Abstraction has 11372 states and 28609 transitions. [2021-06-16 17:18:33,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 28609 transitions. [2021-06-16 17:18:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:33,055 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:33,055 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:33,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 17:18:33,056 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:33,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1098623400, now seen corresponding path program 9 times [2021-06-16 17:18:33,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:33,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238330933] [2021-06-16 17:18:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:33,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:33,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:33,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:33,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238330933] [2021-06-16 17:18:33,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238330933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:33,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:33,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:18:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446762560] [2021-06-16 17:18:33,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:18:33,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:18:33,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:33,088 INFO L87 Difference]: Start difference. First operand 11372 states and 28609 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:33,224 INFO L93 Difference]: Finished difference Result 18228 states and 46474 transitions. [2021-06-16 17:18:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 17:18:33,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:33,253 INFO L225 Difference]: With dead ends: 18228 [2021-06-16 17:18:33,253 INFO L226 Difference]: Without dead ends: 18198 [2021-06-16 17:18:33,253 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:33,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18198 states. [2021-06-16 17:18:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18198 to 10970. [2021-06-16 17:18:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 10969 states have (on average 2.471692952867171) internal successors, (27112), 10969 states have internal predecessors, (27112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 27112 transitions. [2021-06-16 17:18:33,503 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 27112 transitions. Word has length 39 [2021-06-16 17:18:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:33,503 INFO L482 AbstractCegarLoop]: Abstraction has 10970 states and 27112 transitions. [2021-06-16 17:18:33,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 27112 transitions. [2021-06-16 17:18:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:33,518 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:33,518 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:33,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 17:18:33,518 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:33,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1901250902, now seen corresponding path program 10 times [2021-06-16 17:18:33,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:33,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446097382] [2021-06-16 17:18:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:33,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:33,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:33,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:33,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446097382] [2021-06-16 17:18:33,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446097382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:33,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:33,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 17:18:33,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606228501] [2021-06-16 17:18:33,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:18:33,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:33,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:18:33,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:18:33,546 INFO L87 Difference]: Start difference. First operand 10970 states and 27112 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:33,648 INFO L93 Difference]: Finished difference Result 10884 states and 26729 transitions. [2021-06-16 17:18:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:18:33,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:33,664 INFO L225 Difference]: With dead ends: 10884 [2021-06-16 17:18:33,664 INFO L226 Difference]: Without dead ends: 10839 [2021-06-16 17:18:33,664 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2021-06-16 17:18:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 10643. [2021-06-16 17:18:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10643 states, 10642 states have (on average 2.4696485623003195) internal successors, (26282), 10642 states have internal predecessors, (26282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10643 states to 10643 states and 26282 transitions. [2021-06-16 17:18:33,839 INFO L78 Accepts]: Start accepts. Automaton has 10643 states and 26282 transitions. Word has length 39 [2021-06-16 17:18:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:33,840 INFO L482 AbstractCegarLoop]: Abstraction has 10643 states and 26282 transitions. [2021-06-16 17:18:33,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10643 states and 26282 transitions. [2021-06-16 17:18:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:33,854 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:33,854 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:33,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-16 17:18:33,854 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash -970189520, now seen corresponding path program 11 times [2021-06-16 17:18:33,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:33,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52508946] [2021-06-16 17:18:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:33,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:33,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:33,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:33,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:33,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:33,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52508946] [2021-06-16 17:18:33,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52508946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:33,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:33,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 17:18:33,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16173530] [2021-06-16 17:18:33,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:18:33,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:33,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:18:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:18:33,892 INFO L87 Difference]: Start difference. First operand 10643 states and 26282 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:33,989 INFO L93 Difference]: Finished difference Result 10689 states and 26410 transitions. [2021-06-16 17:18:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:18:33,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:34,005 INFO L225 Difference]: With dead ends: 10689 [2021-06-16 17:18:34,006 INFO L226 Difference]: Without dead ends: 10662 [2021-06-16 17:18:34,006 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-06-16 17:18:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 10509. [2021-06-16 17:18:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10509 states, 10508 states have (on average 2.468405024743053) internal successors, (25938), 10508 states have internal predecessors, (25938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10509 states to 10509 states and 25938 transitions. [2021-06-16 17:18:34,179 INFO L78 Accepts]: Start accepts. Automaton has 10509 states and 25938 transitions. Word has length 39 [2021-06-16 17:18:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:34,179 INFO L482 AbstractCegarLoop]: Abstraction has 10509 states and 25938 transitions. [2021-06-16 17:18:34,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10509 states and 25938 transitions. [2021-06-16 17:18:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:34,194 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:34,194 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:34,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-16 17:18:34,194 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1912752648, now seen corresponding path program 12 times [2021-06-16 17:18:34,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:34,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502345852] [2021-06-16 17:18:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:34,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:34,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:34,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:34,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:34,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502345852] [2021-06-16 17:18:34,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502345852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:34,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:34,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:34,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137069735] [2021-06-16 17:18:34,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:34,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:34,254 INFO L87 Difference]: Start difference. First operand 10509 states and 25938 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:34,648 INFO L93 Difference]: Finished difference Result 19576 states and 51466 transitions. [2021-06-16 17:18:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:34,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:34,682 INFO L225 Difference]: With dead ends: 19576 [2021-06-16 17:18:34,682 INFO L226 Difference]: Without dead ends: 19576 [2021-06-16 17:18:34,683 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19576 states. [2021-06-16 17:18:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19576 to 11837. [2021-06-16 17:18:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11837 states, 11836 states have (on average 2.5154613044947616) internal successors, (29773), 11836 states have internal predecessors, (29773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11837 states to 11837 states and 29773 transitions. [2021-06-16 17:18:34,967 INFO L78 Accepts]: Start accepts. Automaton has 11837 states and 29773 transitions. Word has length 39 [2021-06-16 17:18:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:34,967 INFO L482 AbstractCegarLoop]: Abstraction has 11837 states and 29773 transitions. [2021-06-16 17:18:34,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 11837 states and 29773 transitions. [2021-06-16 17:18:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:34,983 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:34,983 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:34,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-16 17:18:34,983 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:34,983 INFO L82 PathProgramCache]: Analyzing trace with hash 113002974, now seen corresponding path program 13 times [2021-06-16 17:18:34,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:34,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528595323] [2021-06-16 17:18:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:34,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:34,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:34,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:35,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:35,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528595323] [2021-06-16 17:18:35,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528595323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:35,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:35,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 17:18:35,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477284635] [2021-06-16 17:18:35,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:18:35,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:35,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:18:35,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:18:35,007 INFO L87 Difference]: Start difference. First operand 11837 states and 29773 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:35,105 INFO L93 Difference]: Finished difference Result 11276 states and 28114 transitions. [2021-06-16 17:18:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:18:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:35,122 INFO L225 Difference]: With dead ends: 11276 [2021-06-16 17:18:35,123 INFO L226 Difference]: Without dead ends: 11216 [2021-06-16 17:18:35,123 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11216 states. [2021-06-16 17:18:35,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11216 to 10973. [2021-06-16 17:18:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10973 states, 10972 states have (on average 2.5070178636529348) internal successors, (27507), 10972 states have internal predecessors, (27507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10973 states to 10973 states and 27507 transitions. [2021-06-16 17:18:35,300 INFO L78 Accepts]: Start accepts. Automaton has 10973 states and 27507 transitions. Word has length 39 [2021-06-16 17:18:35,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:35,301 INFO L482 AbstractCegarLoop]: Abstraction has 10973 states and 27507 transitions. [2021-06-16 17:18:35,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 10973 states and 27507 transitions. [2021-06-16 17:18:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:35,315 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:35,315 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:35,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-16 17:18:35,315 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash -279953966, now seen corresponding path program 14 times [2021-06-16 17:18:35,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:35,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319529654] [2021-06-16 17:18:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:35,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:35,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:35,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:35,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319529654] [2021-06-16 17:18:35,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319529654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:35,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:35,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:18:35,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880234231] [2021-06-16 17:18:35,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:18:35,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:18:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:35,361 INFO L87 Difference]: Start difference. First operand 10973 states and 27507 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:35,619 INFO L93 Difference]: Finished difference Result 22283 states and 56115 transitions. [2021-06-16 17:18:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:18:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:35,653 INFO L225 Difference]: With dead ends: 22283 [2021-06-16 17:18:35,654 INFO L226 Difference]: Without dead ends: 22101 [2021-06-16 17:18:35,654 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22101 states. [2021-06-16 17:18:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22101 to 12421. [2021-06-16 17:18:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12421 states, 12420 states have (on average 2.4686795491143316) internal successors, (30661), 12420 states have internal predecessors, (30661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12421 states to 12421 states and 30661 transitions. [2021-06-16 17:18:35,919 INFO L78 Accepts]: Start accepts. Automaton has 12421 states and 30661 transitions. Word has length 39 [2021-06-16 17:18:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:35,919 INFO L482 AbstractCegarLoop]: Abstraction has 12421 states and 30661 transitions. [2021-06-16 17:18:35,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12421 states and 30661 transitions. [2021-06-16 17:18:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:35,938 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:35,938 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:35,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-16 17:18:35,938 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:35,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1894051412, now seen corresponding path program 15 times [2021-06-16 17:18:35,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:35,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463587044] [2021-06-16 17:18:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:35,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:35,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:35,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:35,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:35,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:35,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:35,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463587044] [2021-06-16 17:18:35,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463587044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:35,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:35,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:18:35,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461377913] [2021-06-16 17:18:35,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:18:35,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:35,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:18:35,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:35,977 INFO L87 Difference]: Start difference. First operand 12421 states and 30661 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:36,111 INFO L93 Difference]: Finished difference Result 15861 states and 39696 transitions. [2021-06-16 17:18:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 17:18:36,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:36,137 INFO L225 Difference]: With dead ends: 15861 [2021-06-16 17:18:36,137 INFO L226 Difference]: Without dead ends: 15809 [2021-06-16 17:18:36,137 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15809 states. [2021-06-16 17:18:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15809 to 9303. [2021-06-16 17:18:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9302 states have (on average 2.4560309610836377) internal successors, (22846), 9302 states have internal predecessors, (22846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 22846 transitions. [2021-06-16 17:18:36,295 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 22846 transitions. Word has length 39 [2021-06-16 17:18:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:36,295 INFO L482 AbstractCegarLoop]: Abstraction has 9303 states and 22846 transitions. [2021-06-16 17:18:36,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 22846 transitions. [2021-06-16 17:18:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:36,307 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:36,307 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:36,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-16 17:18:36,307 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:36,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:36,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1910730830, now seen corresponding path program 16 times [2021-06-16 17:18:36,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:36,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122105364] [2021-06-16 17:18:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:36,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:36,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:36,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:36,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:36,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122105364] [2021-06-16 17:18:36,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122105364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:36,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:36,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:18:36,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255089193] [2021-06-16 17:18:36,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:18:36,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:36,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:18:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:36,348 INFO L87 Difference]: Start difference. First operand 9303 states and 22846 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:36,530 INFO L93 Difference]: Finished difference Result 15168 states and 36035 transitions. [2021-06-16 17:18:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:18:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:36,551 INFO L225 Difference]: With dead ends: 15168 [2021-06-16 17:18:36,551 INFO L226 Difference]: Without dead ends: 14932 [2021-06-16 17:18:36,551 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14932 states. [2021-06-16 17:18:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14932 to 8814. [2021-06-16 17:18:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8814 states, 8813 states have (on average 2.3267899693634404) internal successors, (20506), 8813 states have internal predecessors, (20506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 20506 transitions. [2021-06-16 17:18:36,692 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 20506 transitions. Word has length 39 [2021-06-16 17:18:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:36,692 INFO L482 AbstractCegarLoop]: Abstraction has 8814 states and 20506 transitions. [2021-06-16 17:18:36,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 20506 transitions. [2021-06-16 17:18:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:36,702 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:36,702 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:36,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-16 17:18:36,702 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:36,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1092697168, now seen corresponding path program 17 times [2021-06-16 17:18:36,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:36,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745756763] [2021-06-16 17:18:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:36,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:36,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:36,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:36,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:36,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:36,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:36,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745756763] [2021-06-16 17:18:36,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745756763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:36,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:36,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:36,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367076044] [2021-06-16 17:18:36,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:36,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:36,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:36,760 INFO L87 Difference]: Start difference. First operand 8814 states and 20506 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:36,958 INFO L93 Difference]: Finished difference Result 14648 states and 35137 transitions. [2021-06-16 17:18:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:18:36,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:36,982 INFO L225 Difference]: With dead ends: 14648 [2021-06-16 17:18:36,982 INFO L226 Difference]: Without dead ends: 14488 [2021-06-16 17:18:36,983 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:18:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14488 states. [2021-06-16 17:18:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14488 to 8678. [2021-06-16 17:18:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8678 states, 8677 states have (on average 2.3283392877722715) internal successors, (20203), 8677 states have internal predecessors, (20203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8678 states to 8678 states and 20203 transitions. [2021-06-16 17:18:37,126 INFO L78 Accepts]: Start accepts. Automaton has 8678 states and 20203 transitions. Word has length 39 [2021-06-16 17:18:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:37,126 INFO L482 AbstractCegarLoop]: Abstraction has 8678 states and 20203 transitions. [2021-06-16 17:18:37,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states and 20203 transitions. [2021-06-16 17:18:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:37,136 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:37,136 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:37,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-16 17:18:37,136 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash 71176432, now seen corresponding path program 18 times [2021-06-16 17:18:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:37,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156820528] [2021-06-16 17:18:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:37,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:37,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:37,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:37,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156820528] [2021-06-16 17:18:37,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156820528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:37,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:37,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:18:37,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981929650] [2021-06-16 17:18:37,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:18:37,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:37,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:18:37,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:37,160 INFO L87 Difference]: Start difference. First operand 8678 states and 20203 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:37,270 INFO L93 Difference]: Finished difference Result 14220 states and 34103 transitions. [2021-06-16 17:18:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 17:18:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:37,293 INFO L225 Difference]: With dead ends: 14220 [2021-06-16 17:18:37,293 INFO L226 Difference]: Without dead ends: 14184 [2021-06-16 17:18:37,294 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14184 states. [2021-06-16 17:18:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14184 to 8640. [2021-06-16 17:18:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8640 states, 8639 states have (on average 2.336728788054173) internal successors, (20187), 8639 states have internal predecessors, (20187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8640 states to 8640 states and 20187 transitions. [2021-06-16 17:18:37,446 INFO L78 Accepts]: Start accepts. Automaton has 8640 states and 20187 transitions. Word has length 39 [2021-06-16 17:18:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:37,446 INFO L482 AbstractCegarLoop]: Abstraction has 8640 states and 20187 transitions. [2021-06-16 17:18:37,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8640 states and 20187 transitions. [2021-06-16 17:18:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:37,455 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:37,455 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:37,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-16 17:18:37,456 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash -461553246, now seen corresponding path program 19 times [2021-06-16 17:18:37,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:37,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404327990] [2021-06-16 17:18:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:37,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:37,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:37,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:37,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:37,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:37,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:37,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404327990] [2021-06-16 17:18:37,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404327990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:37,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:37,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:37,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821153000] [2021-06-16 17:18:37,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:37,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:37,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:37,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:37,513 INFO L87 Difference]: Start difference. First operand 8640 states and 20187 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:37,842 INFO L93 Difference]: Finished difference Result 14917 states and 35486 transitions. [2021-06-16 17:18:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:37,863 INFO L225 Difference]: With dead ends: 14917 [2021-06-16 17:18:37,863 INFO L226 Difference]: Without dead ends: 14615 [2021-06-16 17:18:37,863 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 76.1ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14615 states. [2021-06-16 17:18:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14615 to 8863. [2021-06-16 17:18:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8863 states, 8862 states have (on average 2.314601670051907) internal successors, (20512), 8862 states have internal predecessors, (20512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8863 states to 8863 states and 20512 transitions. [2021-06-16 17:18:38,020 INFO L78 Accepts]: Start accepts. Automaton has 8863 states and 20512 transitions. Word has length 39 [2021-06-16 17:18:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:38,020 INFO L482 AbstractCegarLoop]: Abstraction has 8863 states and 20512 transitions. [2021-06-16 17:18:38,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8863 states and 20512 transitions. [2021-06-16 17:18:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:38,032 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:38,033 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:38,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-16 17:18:38,033 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:38,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1251452528, now seen corresponding path program 20 times [2021-06-16 17:18:38,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:38,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515172563] [2021-06-16 17:18:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:38,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:38,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:38,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:38,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:38,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515172563] [2021-06-16 17:18:38,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515172563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:38,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:38,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:38,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099275982] [2021-06-16 17:18:38,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:38,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:38,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:38,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:38,074 INFO L87 Difference]: Start difference. First operand 8863 states and 20512 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:38,305 INFO L93 Difference]: Finished difference Result 15219 states and 35819 transitions. [2021-06-16 17:18:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:18:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:38,324 INFO L225 Difference]: With dead ends: 15219 [2021-06-16 17:18:38,325 INFO L226 Difference]: Without dead ends: 14903 [2021-06-16 17:18:38,325 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:18:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14903 states. [2021-06-16 17:18:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14903 to 8633. [2021-06-16 17:18:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8633 states, 8632 states have (on average 2.3008572752548657) internal successors, (19861), 8632 states have internal predecessors, (19861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8633 states to 8633 states and 19861 transitions. [2021-06-16 17:18:38,460 INFO L78 Accepts]: Start accepts. Automaton has 8633 states and 19861 transitions. Word has length 39 [2021-06-16 17:18:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:38,460 INFO L482 AbstractCegarLoop]: Abstraction has 8633 states and 19861 transitions. [2021-06-16 17:18:38,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 8633 states and 19861 transitions. [2021-06-16 17:18:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:38,469 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:38,469 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:38,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-16 17:18:38,469 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash 24943490, now seen corresponding path program 21 times [2021-06-16 17:18:38,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:38,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973952284] [2021-06-16 17:18:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:38,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:38,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:38,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:38,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:38,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:38,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:38,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973952284] [2021-06-16 17:18:38,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973952284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:38,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:38,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:38,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436157503] [2021-06-16 17:18:38,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:38,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:38,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:38,520 INFO L87 Difference]: Start difference. First operand 8633 states and 19861 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:38,842 INFO L93 Difference]: Finished difference Result 15386 states and 35799 transitions. [2021-06-16 17:18:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:38,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:38,861 INFO L225 Difference]: With dead ends: 15386 [2021-06-16 17:18:38,861 INFO L226 Difference]: Without dead ends: 14626 [2021-06-16 17:18:38,861 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14626 states. [2021-06-16 17:18:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 8326. [2021-06-16 17:18:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8326 states, 8325 states have (on average 2.293693693693694) internal successors, (19095), 8325 states have internal predecessors, (19095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8326 states to 8326 states and 19095 transitions. [2021-06-16 17:18:39,028 INFO L78 Accepts]: Start accepts. Automaton has 8326 states and 19095 transitions. Word has length 39 [2021-06-16 17:18:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:39,028 INFO L482 AbstractCegarLoop]: Abstraction has 8326 states and 19095 transitions. [2021-06-16 17:18:39,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8326 states and 19095 transitions. [2021-06-16 17:18:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:39,037 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:39,037 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:39,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-16 17:18:39,038 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2116837970, now seen corresponding path program 22 times [2021-06-16 17:18:39,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:39,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635370808] [2021-06-16 17:18:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:39,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:39,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:39,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:39,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:39,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635370808] [2021-06-16 17:18:39,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635370808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:39,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:39,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:18:39,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244667465] [2021-06-16 17:18:39,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:18:39,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:39,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:18:39,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:39,074 INFO L87 Difference]: Start difference. First operand 8326 states and 19095 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:39,287 INFO L93 Difference]: Finished difference Result 14813 states and 34469 transitions. [2021-06-16 17:18:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:18:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:39,306 INFO L225 Difference]: With dead ends: 14813 [2021-06-16 17:18:39,306 INFO L226 Difference]: Without dead ends: 14321 [2021-06-16 17:18:39,307 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2021-06-16 17:18:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 7268. [2021-06-16 17:18:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 2.2534746112563644) internal successors, (16376), 7267 states have internal predecessors, (16376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 16376 transitions. [2021-06-16 17:18:39,458 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 16376 transitions. Word has length 39 [2021-06-16 17:18:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:39,458 INFO L482 AbstractCegarLoop]: Abstraction has 7268 states and 16376 transitions. [2021-06-16 17:18:39,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 16376 transitions. [2021-06-16 17:18:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:39,466 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:39,466 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:39,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-16 17:18:39,466 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:39,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1229381368, now seen corresponding path program 23 times [2021-06-16 17:18:39,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:39,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846505510] [2021-06-16 17:18:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:39,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:39,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:39,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:39,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:39,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846505510] [2021-06-16 17:18:39,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846505510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:39,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:39,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:39,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946037352] [2021-06-16 17:18:39,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:39,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:39,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:39,509 INFO L87 Difference]: Start difference. First operand 7268 states and 16376 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:39,755 INFO L93 Difference]: Finished difference Result 13088 states and 30792 transitions. [2021-06-16 17:18:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 17:18:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:39,773 INFO L225 Difference]: With dead ends: 13088 [2021-06-16 17:18:39,773 INFO L226 Difference]: Without dead ends: 12604 [2021-06-16 17:18:39,773 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-16 17:18:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12604 states. [2021-06-16 17:18:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12604 to 7738. [2021-06-16 17:18:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7737 states have (on average 2.284347938477446) internal successors, (17674), 7737 states have internal predecessors, (17674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 17674 transitions. [2021-06-16 17:18:39,916 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 17674 transitions. Word has length 39 [2021-06-16 17:18:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:39,916 INFO L482 AbstractCegarLoop]: Abstraction has 7738 states and 17674 transitions. [2021-06-16 17:18:39,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 17674 transitions. [2021-06-16 17:18:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:39,924 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:39,924 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:39,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-16 17:18:39,924 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash -549746956, now seen corresponding path program 24 times [2021-06-16 17:18:39,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:39,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848074708] [2021-06-16 17:18:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:39,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:39,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:39,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:39,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:39,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:39,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:39,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848074708] [2021-06-16 17:18:39,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848074708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:39,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:39,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:39,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998813768] [2021-06-16 17:18:39,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:39,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:39,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:39,984 INFO L87 Difference]: Start difference. First operand 7738 states and 17674 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:40,295 INFO L93 Difference]: Finished difference Result 13003 states and 30935 transitions. [2021-06-16 17:18:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:40,296 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:40,311 INFO L225 Difference]: With dead ends: 13003 [2021-06-16 17:18:40,312 INFO L226 Difference]: Without dead ends: 12565 [2021-06-16 17:18:40,312 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12565 states. [2021-06-16 17:18:40,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12565 to 7612. [2021-06-16 17:18:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7612 states, 7611 states have (on average 2.272106162133754) internal successors, (17293), 7611 states have internal predecessors, (17293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7612 states to 7612 states and 17293 transitions. [2021-06-16 17:18:40,452 INFO L78 Accepts]: Start accepts. Automaton has 7612 states and 17293 transitions. Word has length 39 [2021-06-16 17:18:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:40,453 INFO L482 AbstractCegarLoop]: Abstraction has 7612 states and 17293 transitions. [2021-06-16 17:18:40,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7612 states and 17293 transitions. [2021-06-16 17:18:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:40,461 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:40,461 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:40,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-16 17:18:40,461 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1732632044, now seen corresponding path program 25 times [2021-06-16 17:18:40,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:40,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462303532] [2021-06-16 17:18:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:40,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:40,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:40,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:40,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:40,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462303532] [2021-06-16 17:18:40,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462303532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:40,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:40,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:18:40,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333406352] [2021-06-16 17:18:40,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:18:40,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:40,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:18:40,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:40,497 INFO L87 Difference]: Start difference. First operand 7612 states and 17293 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:40,635 INFO L93 Difference]: Finished difference Result 12005 states and 28124 transitions. [2021-06-16 17:18:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 17:18:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:40,652 INFO L225 Difference]: With dead ends: 12005 [2021-06-16 17:18:40,652 INFO L226 Difference]: Without dead ends: 11957 [2021-06-16 17:18:40,653 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11957 states. [2021-06-16 17:18:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11957 to 7566. [2021-06-16 17:18:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7566 states, 7565 states have (on average 2.2730998017184403) internal successors, (17196), 7565 states have internal predecessors, (17196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7566 states to 7566 states and 17196 transitions. [2021-06-16 17:18:40,788 INFO L78 Accepts]: Start accepts. Automaton has 7566 states and 17196 transitions. Word has length 39 [2021-06-16 17:18:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:40,788 INFO L482 AbstractCegarLoop]: Abstraction has 7566 states and 17196 transitions. [2021-06-16 17:18:40,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7566 states and 17196 transitions. [2021-06-16 17:18:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:40,796 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:40,796 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:40,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-16 17:18:40,796 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash -890722644, now seen corresponding path program 26 times [2021-06-16 17:18:40,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:40,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315943941] [2021-06-16 17:18:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:40,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:40,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:40,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:40,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:40,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:40,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:40,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315943941] [2021-06-16 17:18:40,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315943941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:40,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:40,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:18:40,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144638975] [2021-06-16 17:18:40,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:18:40,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:40,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:18:40,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:40,831 INFO L87 Difference]: Start difference. First operand 7566 states and 17196 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:40,999 INFO L93 Difference]: Finished difference Result 9050 states and 20107 transitions. [2021-06-16 17:18:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:18:40,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:41,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:41,008 INFO L225 Difference]: With dead ends: 9050 [2021-06-16 17:18:41,008 INFO L226 Difference]: Without dead ends: 8505 [2021-06-16 17:18:41,009 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2021-06-16 17:18:41,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 5879. [2021-06-16 17:18:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 5878 states have (on average 2.184076216400136) internal successors, (12838), 5878 states have internal predecessors, (12838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 12838 transitions. [2021-06-16 17:18:41,096 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 12838 transitions. Word has length 39 [2021-06-16 17:18:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:41,096 INFO L482 AbstractCegarLoop]: Abstraction has 5879 states and 12838 transitions. [2021-06-16 17:18:41,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 12838 transitions. [2021-06-16 17:18:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:41,102 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:41,102 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:41,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-16 17:18:41,102 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1730185570, now seen corresponding path program 27 times [2021-06-16 17:18:41,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:41,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427070756] [2021-06-16 17:18:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:41,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:41,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:41,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:41,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:41,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427070756] [2021-06-16 17:18:41,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427070756] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:41,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:41,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:41,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743167711] [2021-06-16 17:18:41,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:41,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:41,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:41,161 INFO L87 Difference]: Start difference. First operand 5879 states and 12838 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:41,423 INFO L93 Difference]: Finished difference Result 8294 states and 17897 transitions. [2021-06-16 17:18:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:41,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:41,432 INFO L225 Difference]: With dead ends: 8294 [2021-06-16 17:18:41,432 INFO L226 Difference]: Without dead ends: 7742 [2021-06-16 17:18:41,433 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2021-06-16 17:18:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 5344. [2021-06-16 17:18:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 2.130076735916152) internal successors, (11381), 5343 states have internal predecessors, (11381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 11381 transitions. [2021-06-16 17:18:41,510 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 11381 transitions. Word has length 39 [2021-06-16 17:18:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:41,510 INFO L482 AbstractCegarLoop]: Abstraction has 5344 states and 11381 transitions. [2021-06-16 17:18:41,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 11381 transitions. [2021-06-16 17:18:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:41,515 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:41,515 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:41,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-16 17:18:41,515 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash 368265456, now seen corresponding path program 28 times [2021-06-16 17:18:41,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:41,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851616240] [2021-06-16 17:18:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:41,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:41,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:41,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:41,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851616240] [2021-06-16 17:18:41,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851616240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:41,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:41,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:41,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078665377] [2021-06-16 17:18:41,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:41,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:41,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:41,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:41,558 INFO L87 Difference]: Start difference. First operand 5344 states and 11381 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:41,805 INFO L93 Difference]: Finished difference Result 8704 states and 18899 transitions. [2021-06-16 17:18:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:18:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:41,814 INFO L225 Difference]: With dead ends: 8704 [2021-06-16 17:18:41,814 INFO L226 Difference]: Without dead ends: 8664 [2021-06-16 17:18:41,814 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:18:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8664 states. [2021-06-16 17:18:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8664 to 5296. [2021-06-16 17:18:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 2.1233238904627005) internal successors, (11243), 5295 states have internal predecessors, (11243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 11243 transitions. [2021-06-16 17:18:41,880 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 11243 transitions. Word has length 39 [2021-06-16 17:18:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:41,881 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 11243 transitions. [2021-06-16 17:18:41,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 11243 transitions. [2021-06-16 17:18:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:41,885 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:41,885 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:41,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-16 17:18:41,885 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash 999409378, now seen corresponding path program 29 times [2021-06-16 17:18:41,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:41,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488989076] [2021-06-16 17:18:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:41,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:41,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:41,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:41,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:41,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:41,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488989076] [2021-06-16 17:18:41,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488989076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:41,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:41,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:41,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335677852] [2021-06-16 17:18:41,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:41,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:41,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:41,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:41,929 INFO L87 Difference]: Start difference. First operand 5296 states and 11243 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:42,194 INFO L93 Difference]: Finished difference Result 8484 states and 18381 transitions. [2021-06-16 17:18:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:42,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:42,203 INFO L225 Difference]: With dead ends: 8484 [2021-06-16 17:18:42,203 INFO L226 Difference]: Without dead ends: 8370 [2021-06-16 17:18:42,203 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-06-16 17:18:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 5232. [2021-06-16 17:18:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5231 states have (on average 2.114891990059262) internal successors, (11063), 5231 states have internal predecessors, (11063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 11063 transitions. [2021-06-16 17:18:42,277 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 11063 transitions. Word has length 39 [2021-06-16 17:18:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:42,277 INFO L482 AbstractCegarLoop]: Abstraction has 5232 states and 11063 transitions. [2021-06-16 17:18:42,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 11063 transitions. [2021-06-16 17:18:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:42,282 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:42,282 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:42,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-16 17:18:42,282 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:42,282 INFO L82 PathProgramCache]: Analyzing trace with hash -403114906, now seen corresponding path program 30 times [2021-06-16 17:18:42,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:42,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479251606] [2021-06-16 17:18:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:42,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:42,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:42,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:42,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479251606] [2021-06-16 17:18:42,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479251606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:42,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:42,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:18:42,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475477399] [2021-06-16 17:18:42,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:18:42,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:42,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:18:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:42,334 INFO L87 Difference]: Start difference. First operand 5232 states and 11063 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:42,652 INFO L93 Difference]: Finished difference Result 8550 states and 18424 transitions. [2021-06-16 17:18:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 17:18:42,653 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:42,661 INFO L225 Difference]: With dead ends: 8550 [2021-06-16 17:18:42,661 INFO L226 Difference]: Without dead ends: 8405 [2021-06-16 17:18:42,661 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-16 17:18:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8405 states. [2021-06-16 17:18:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8405 to 5311. [2021-06-16 17:18:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5311 states, 5310 states have (on average 2.1073446327683616) internal successors, (11190), 5310 states have internal predecessors, (11190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 11190 transitions. [2021-06-16 17:18:42,725 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 11190 transitions. Word has length 39 [2021-06-16 17:18:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:42,725 INFO L482 AbstractCegarLoop]: Abstraction has 5311 states and 11190 transitions. [2021-06-16 17:18:42,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:42,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 11190 transitions. [2021-06-16 17:18:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:42,730 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:42,730 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:42,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-16 17:18:42,730 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1500800720, now seen corresponding path program 31 times [2021-06-16 17:18:42,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:42,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053187226] [2021-06-16 17:18:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:42,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:42,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:42,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:42,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:42,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:42,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053187226] [2021-06-16 17:18:42,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053187226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:42,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:42,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:42,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212887776] [2021-06-16 17:18:42,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:42,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:42,786 INFO L87 Difference]: Start difference. First operand 5311 states and 11190 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:43,014 INFO L93 Difference]: Finished difference Result 8877 states and 19057 transitions. [2021-06-16 17:18:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:18:43,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:43,022 INFO L225 Difference]: With dead ends: 8877 [2021-06-16 17:18:43,022 INFO L226 Difference]: Without dead ends: 8653 [2021-06-16 17:18:43,023 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:18:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8653 states. [2021-06-16 17:18:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8653 to 5235. [2021-06-16 17:18:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 2.084447841039358) internal successors, (10910), 5234 states have internal predecessors, (10910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 10910 transitions. [2021-06-16 17:18:43,087 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 10910 transitions. Word has length 39 [2021-06-16 17:18:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:43,087 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 10910 transitions. [2021-06-16 17:18:43,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 10910 transitions. [2021-06-16 17:18:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:43,091 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:43,092 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:43,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-16 17:18:43,092 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1517770558, now seen corresponding path program 32 times [2021-06-16 17:18:43,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:43,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337534984] [2021-06-16 17:18:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:43,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:43,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:43,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:43,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337534984] [2021-06-16 17:18:43,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337534984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:43,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:43,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:43,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939768172] [2021-06-16 17:18:43,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:43,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:43,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:43,135 INFO L87 Difference]: Start difference. First operand 5235 states and 10910 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:43,380 INFO L93 Difference]: Finished difference Result 8697 states and 18557 transitions. [2021-06-16 17:18:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:43,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:43,389 INFO L225 Difference]: With dead ends: 8697 [2021-06-16 17:18:43,389 INFO L226 Difference]: Without dead ends: 8149 [2021-06-16 17:18:43,389 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2021-06-16 17:18:43,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 5091. [2021-06-16 17:18:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5091 states, 5090 states have (on average 2.069155206286837) internal successors, (10532), 5090 states have internal predecessors, (10532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 10532 transitions. [2021-06-16 17:18:43,452 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 10532 transitions. Word has length 39 [2021-06-16 17:18:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:43,452 INFO L482 AbstractCegarLoop]: Abstraction has 5091 states and 10532 transitions. [2021-06-16 17:18:43,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 10532 transitions. [2021-06-16 17:18:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:43,456 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:43,456 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:43,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-16 17:18:43,457 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:43,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:43,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1610112582, now seen corresponding path program 33 times [2021-06-16 17:18:43,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:43,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516943437] [2021-06-16 17:18:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:43,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:43,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:43,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:43,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516943437] [2021-06-16 17:18:43,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516943437] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:43,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:43,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:18:43,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340704084] [2021-06-16 17:18:43,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:18:43,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:43,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:18:43,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:43,506 INFO L87 Difference]: Start difference. First operand 5091 states and 10532 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:43,824 INFO L93 Difference]: Finished difference Result 8601 states and 18248 transitions. [2021-06-16 17:18:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 17:18:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:43,833 INFO L225 Difference]: With dead ends: 8601 [2021-06-16 17:18:43,833 INFO L226 Difference]: Without dead ends: 7965 [2021-06-16 17:18:43,833 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-16 17:18:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2021-06-16 17:18:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 4907. [2021-06-16 17:18:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4906 states have (on average 2.0809213208316346) internal successors, (10209), 4906 states have internal predecessors, (10209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 10209 transitions. [2021-06-16 17:18:43,903 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 10209 transitions. Word has length 39 [2021-06-16 17:18:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:43,903 INFO L482 AbstractCegarLoop]: Abstraction has 4907 states and 10209 transitions. [2021-06-16 17:18:43,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 10209 transitions. [2021-06-16 17:18:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:43,909 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:43,909 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:43,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-16 17:18:43,909 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash 5049932, now seen corresponding path program 34 times [2021-06-16 17:18:43,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:43,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706741933] [2021-06-16 17:18:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:43,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:43,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:43,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:43,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:43,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:43,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706741933] [2021-06-16 17:18:43,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706741933] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:43,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:43,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:43,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346269299] [2021-06-16 17:18:43,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:43,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:43,955 INFO L87 Difference]: Start difference. First operand 4907 states and 10209 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:44,242 INFO L93 Difference]: Finished difference Result 8833 states and 19398 transitions. [2021-06-16 17:18:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:18:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:44,251 INFO L225 Difference]: With dead ends: 8833 [2021-06-16 17:18:44,252 INFO L226 Difference]: Without dead ends: 8545 [2021-06-16 17:18:44,253 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-16 17:18:44,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2021-06-16 17:18:44,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 4507. [2021-06-16 17:18:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4507 states, 4506 states have (on average 2.110075454948957) internal successors, (9508), 4506 states have internal predecessors, (9508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 9508 transitions. [2021-06-16 17:18:44,315 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 9508 transitions. Word has length 39 [2021-06-16 17:18:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:44,315 INFO L482 AbstractCegarLoop]: Abstraction has 4507 states and 9508 transitions. [2021-06-16 17:18:44,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 9508 transitions. [2021-06-16 17:18:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:44,319 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:44,319 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:44,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-16 17:18:44,319 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 684684344, now seen corresponding path program 35 times [2021-06-16 17:18:44,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:44,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235969746] [2021-06-16 17:18:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:44,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:44,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:44,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:44,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235969746] [2021-06-16 17:18:44,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235969746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:44,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:44,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:44,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169420048] [2021-06-16 17:18:44,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:44,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:44,364 INFO L87 Difference]: Start difference. First operand 4507 states and 9508 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:44,680 INFO L93 Difference]: Finished difference Result 7957 states and 17467 transitions. [2021-06-16 17:18:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:44,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:44,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:44,687 INFO L225 Difference]: With dead ends: 7957 [2021-06-16 17:18:44,687 INFO L226 Difference]: Without dead ends: 7669 [2021-06-16 17:18:44,687 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7669 states. [2021-06-16 17:18:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7669 to 4325. [2021-06-16 17:18:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4325 states, 4324 states have (on average 2.129972247918594) internal successors, (9210), 4324 states have internal predecessors, (9210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 9210 transitions. [2021-06-16 17:18:44,744 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 9210 transitions. Word has length 39 [2021-06-16 17:18:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:44,744 INFO L482 AbstractCegarLoop]: Abstraction has 4325 states and 9210 transitions. [2021-06-16 17:18:44,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 9210 transitions. [2021-06-16 17:18:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:44,748 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:44,748 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:44,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-16 17:18:44,749 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1183151688, now seen corresponding path program 36 times [2021-06-16 17:18:44,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:44,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195756042] [2021-06-16 17:18:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:44,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:44,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:44,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:44,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:44,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:44,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195756042] [2021-06-16 17:18:44,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195756042] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:44,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:44,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:18:44,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043436055] [2021-06-16 17:18:44,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:18:44,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:18:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:44,812 INFO L87 Difference]: Start difference. First operand 4325 states and 9210 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:45,176 INFO L93 Difference]: Finished difference Result 7666 states and 16930 transitions. [2021-06-16 17:18:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 17:18:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:45,184 INFO L225 Difference]: With dead ends: 7666 [2021-06-16 17:18:45,184 INFO L226 Difference]: Without dead ends: 7426 [2021-06-16 17:18:45,184 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-16 17:18:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2021-06-16 17:18:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 4152. [2021-06-16 17:18:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 2.1414117080221633) internal successors, (8889), 4151 states have internal predecessors, (8889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 8889 transitions. [2021-06-16 17:18:45,235 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 8889 transitions. Word has length 39 [2021-06-16 17:18:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:45,235 INFO L482 AbstractCegarLoop]: Abstraction has 4152 states and 8889 transitions. [2021-06-16 17:18:45,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 8889 transitions. [2021-06-16 17:18:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:45,239 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:45,239 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:45,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-16 17:18:45,239 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:45,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:45,239 INFO L82 PathProgramCache]: Analyzing trace with hash 810482654, now seen corresponding path program 37 times [2021-06-16 17:18:45,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:45,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209687662] [2021-06-16 17:18:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:45,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:45,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:45,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:45,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209687662] [2021-06-16 17:18:45,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209687662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:45,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:45,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:45,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405993048] [2021-06-16 17:18:45,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:45,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:45,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:45,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:45,291 INFO L87 Difference]: Start difference. First operand 4152 states and 8889 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:45,547 INFO L93 Difference]: Finished difference Result 7620 states and 16803 transitions. [2021-06-16 17:18:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 17:18:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:45,554 INFO L225 Difference]: With dead ends: 7620 [2021-06-16 17:18:45,555 INFO L226 Difference]: Without dead ends: 7502 [2021-06-16 17:18:45,555 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-16 17:18:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7502 states. [2021-06-16 17:18:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7502 to 4040. [2021-06-16 17:18:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 4039 states have (on average 2.122059915820748) internal successors, (8571), 4039 states have internal predecessors, (8571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 8571 transitions. [2021-06-16 17:18:45,606 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 8571 transitions. Word has length 39 [2021-06-16 17:18:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:45,606 INFO L482 AbstractCegarLoop]: Abstraction has 4040 states and 8571 transitions. [2021-06-16 17:18:45,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 8571 transitions. [2021-06-16 17:18:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:45,609 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:45,609 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:45,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-16 17:18:45,610 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:45,610 INFO L82 PathProgramCache]: Analyzing trace with hash 973999290, now seen corresponding path program 38 times [2021-06-16 17:18:45,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:45,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845241233] [2021-06-16 17:18:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:45,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:45,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:45,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:45,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:45,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:45,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845241233] [2021-06-16 17:18:45,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845241233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:45,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:45,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:18:45,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776585156] [2021-06-16 17:18:45,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:18:45,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:45,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:18:45,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:45,661 INFO L87 Difference]: Start difference. First operand 4040 states and 8571 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:46,015 INFO L93 Difference]: Finished difference Result 7508 states and 16508 transitions. [2021-06-16 17:18:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 17:18:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:46,022 INFO L225 Difference]: With dead ends: 7508 [2021-06-16 17:18:46,022 INFO L226 Difference]: Without dead ends: 7321 [2021-06-16 17:18:46,022 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-16 17:18:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7321 states. [2021-06-16 17:18:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7321 to 3947. [2021-06-16 17:18:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3946 states have (on average 2.139888494678155) internal successors, (8444), 3946 states have internal predecessors, (8444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 8444 transitions. [2021-06-16 17:18:46,072 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 8444 transitions. Word has length 39 [2021-06-16 17:18:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:46,073 INFO L482 AbstractCegarLoop]: Abstraction has 3947 states and 8444 transitions. [2021-06-16 17:18:46,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 8444 transitions. [2021-06-16 17:18:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:46,076 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:46,076 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:46,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-16 17:18:46,076 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash -527951954, now seen corresponding path program 39 times [2021-06-16 17:18:46,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:46,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188251030] [2021-06-16 17:18:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:46,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:46,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:46,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:46,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188251030] [2021-06-16 17:18:46,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188251030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:46,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:46,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:18:46,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616291640] [2021-06-16 17:18:46,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:18:46,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:46,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:18:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:18:46,098 INFO L87 Difference]: Start difference. First operand 3947 states and 8444 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:46,187 INFO L93 Difference]: Finished difference Result 6809 states and 14755 transitions. [2021-06-16 17:18:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 17:18:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:46,193 INFO L225 Difference]: With dead ends: 6809 [2021-06-16 17:18:46,193 INFO L226 Difference]: Without dead ends: 6599 [2021-06-16 17:18:46,194 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2021-06-16 17:18:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 4065. [2021-06-16 17:18:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 4064 states have (on average 2.1343503937007875) internal successors, (8674), 4064 states have internal predecessors, (8674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 8674 transitions. [2021-06-16 17:18:46,240 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 8674 transitions. Word has length 39 [2021-06-16 17:18:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:46,240 INFO L482 AbstractCegarLoop]: Abstraction has 4065 states and 8674 transitions. [2021-06-16 17:18:46,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 8674 transitions. [2021-06-16 17:18:46,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:46,244 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:46,244 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:46,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-16 17:18:46,244 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash -944247378, now seen corresponding path program 40 times [2021-06-16 17:18:46,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:46,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764442624] [2021-06-16 17:18:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:46,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:46,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:46,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:46,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764442624] [2021-06-16 17:18:46,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764442624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:46,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:46,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:18:46,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378436253] [2021-06-16 17:18:46,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:18:46,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:46,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:18:46,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:18:46,276 INFO L87 Difference]: Start difference. First operand 4065 states and 8674 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:46,399 INFO L93 Difference]: Finished difference Result 3253 states and 6372 transitions. [2021-06-16 17:18:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 17:18:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:46,402 INFO L225 Difference]: With dead ends: 3253 [2021-06-16 17:18:46,402 INFO L226 Difference]: Without dead ends: 2494 [2021-06-16 17:18:46,402 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.5ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2021-06-16 17:18:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1994. [2021-06-16 17:18:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.1033617661816355) internal successors, (4192), 1993 states have internal predecessors, (4192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 4192 transitions. [2021-06-16 17:18:46,420 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 4192 transitions. Word has length 39 [2021-06-16 17:18:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:46,420 INFO L482 AbstractCegarLoop]: Abstraction has 1994 states and 4192 transitions. [2021-06-16 17:18:46,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 4192 transitions. [2021-06-16 17:18:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:46,422 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:46,422 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:46,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-16 17:18:46,423 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:46,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:46,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1330584630, now seen corresponding path program 41 times [2021-06-16 17:18:46,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:46,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862967253] [2021-06-16 17:18:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:46,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:46,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:46,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:46,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862967253] [2021-06-16 17:18:46,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862967253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:46,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:46,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 17:18:46,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559374823] [2021-06-16 17:18:46,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 17:18:46,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:46,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 17:18:46,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-16 17:18:46,465 INFO L87 Difference]: Start difference. First operand 1994 states and 4192 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:46,651 INFO L93 Difference]: Finished difference Result 2462 states and 4932 transitions. [2021-06-16 17:18:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:18:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:46,653 INFO L225 Difference]: With dead ends: 2462 [2021-06-16 17:18:46,653 INFO L226 Difference]: Without dead ends: 1812 [2021-06-16 17:18:46,654 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:18:46,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-06-16 17:18:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1724. [2021-06-16 17:18:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.1613464886825304) internal successors, (3724), 1723 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 3724 transitions. [2021-06-16 17:18:46,669 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 3724 transitions. Word has length 39 [2021-06-16 17:18:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:46,669 INFO L482 AbstractCegarLoop]: Abstraction has 1724 states and 3724 transitions. [2021-06-16 17:18:46,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 3724 transitions. [2021-06-16 17:18:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:46,670 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:46,671 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:46,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-16 17:18:46,671 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:46,671 INFO L82 PathProgramCache]: Analyzing trace with hash 820757352, now seen corresponding path program 42 times [2021-06-16 17:18:46,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:46,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657444811] [2021-06-16 17:18:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:46,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:46,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:46,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:46,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657444811] [2021-06-16 17:18:46,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657444811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:46,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:46,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-16 17:18:46,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169911564] [2021-06-16 17:18:46,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-16 17:18:46,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:46,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-16 17:18:46,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:46,722 INFO L87 Difference]: Start difference. First operand 1724 states and 3724 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:46,884 INFO L93 Difference]: Finished difference Result 1804 states and 3838 transitions. [2021-06-16 17:18:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-16 17:18:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:46,886 INFO L225 Difference]: With dead ends: 1804 [2021-06-16 17:18:46,886 INFO L226 Difference]: Without dead ends: 1590 [2021-06-16 17:18:46,886 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-06-16 17:18:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-06-16 17:18:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1590. [2021-06-16 17:18:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1589 states have (on average 2.2089364380113277) internal successors, (3510), 1589 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 3510 transitions. [2021-06-16 17:18:46,900 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 3510 transitions. Word has length 39 [2021-06-16 17:18:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:46,900 INFO L482 AbstractCegarLoop]: Abstraction has 1590 states and 3510 transitions. [2021-06-16 17:18:46,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 3510 transitions. [2021-06-16 17:18:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:46,902 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:46,902 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:46,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-16 17:18:46,902 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash -195865080, now seen corresponding path program 43 times [2021-06-16 17:18:46,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:46,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106519217] [2021-06-16 17:18:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:46,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:46,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:46,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:46,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:46,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:46,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:46,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106519217] [2021-06-16 17:18:46,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106519217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:46,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:46,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 17:18:46,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869750033] [2021-06-16 17:18:46,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 17:18:46,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:46,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 17:18:46,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:18:46,937 INFO L87 Difference]: Start difference. First operand 1590 states and 3510 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:47,030 INFO L93 Difference]: Finished difference Result 544 states and 976 transitions. [2021-06-16 17:18:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 17:18:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:47,031 INFO L225 Difference]: With dead ends: 544 [2021-06-16 17:18:47,031 INFO L226 Difference]: Without dead ends: 252 [2021-06-16 17:18:47,031 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-16 17:18:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-06-16 17:18:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 184. [2021-06-16 17:18:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.830601092896175) internal successors, (335), 183 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 335 transitions. [2021-06-16 17:18:47,034 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 335 transitions. Word has length 39 [2021-06-16 17:18:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:47,034 INFO L482 AbstractCegarLoop]: Abstraction has 184 states and 335 transitions. [2021-06-16 17:18:47,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 335 transitions. [2021-06-16 17:18:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-16 17:18:47,034 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:18:47,034 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 17:18:47,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-16 17:18:47,034 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:18:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:18:47,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1385677152, now seen corresponding path program 44 times [2021-06-16 17:18:47,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:18:47,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505338684] [2021-06-16 17:18:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:18:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:18:47,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:18:47,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 17:18:47,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:18:47,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:18:47,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:18:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:18:47,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:18:47,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505338684] [2021-06-16 17:18:47,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505338684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:18:47,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:18:47,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-16 17:18:47,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537059826] [2021-06-16 17:18:47,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-16 17:18:47,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:18:47,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-16 17:18:47,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-16 17:18:47,080 INFO L87 Difference]: Start difference. First operand 184 states and 335 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:18:47,173 INFO L93 Difference]: Finished difference Result 140 states and 211 transitions. [2021-06-16 17:18:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 17:18:47,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-16 17:18:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:18:47,174 INFO L225 Difference]: With dead ends: 140 [2021-06-16 17:18:47,174 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 17:18:47,174 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-16 17:18:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 17:18:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 17:18:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 17:18:47,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-06-16 17:18:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:18:47,174 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 17:18:47,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:18:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 17:18:47,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 17:18:47,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-16 17:18:47,176 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 17:18:47,177 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 05:18:47 BasicIcfg [2021-06-16 17:18:47,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 17:18:47,178 INFO L168 Benchmark]: Toolchain (without parser) took 20581.70 ms. Allocated memory was 127.9 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 107.3 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-06-16 17:18:47,178 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 127.9 MB. Free memory is still 108.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 17:18:47,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.21 ms. Allocated memory is still 127.9 MB. Free memory was 107.2 MB in the beginning and 105.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 17:18:47,178 INFO L168 Benchmark]: Boogie Preprocessor took 9.12 ms. Allocated memory is still 127.9 MB. Free memory was 105.7 MB in the beginning and 104.7 MB in the end (delta: 987.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 17:18:47,178 INFO L168 Benchmark]: RCFGBuilder took 271.30 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 100.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2021-06-16 17:18:47,178 INFO L168 Benchmark]: TraceAbstraction took 20274.94 ms. Allocated memory was 127.9 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 100.0 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-06-16 17:18:47,179 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 0.27 ms. Allocated memory is still 127.9 MB. Free memory is still 108.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.21 ms. Allocated memory is still 127.9 MB. Free memory was 107.2 MB in the beginning and 105.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.12 ms. Allocated memory is still 127.9 MB. Free memory was 105.7 MB in the beginning and 104.7 MB in the end (delta: 987.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 271.30 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 100.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20274.94 ms. Allocated memory was 127.9 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 100.0 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 57474, positive: 53345, positive conditional: 53345, positive unconditional: 0, negative: 4129, negative conditional: 4129, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 57473, positive: 53345, positive conditional: 0, positive unconditional: 53345, negative: 4128, negative conditional: 0, negative unconditional: 4128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 494, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 494, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 206, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 57473, positive: 52891, positive conditional: 0, positive unconditional: 52891, negative: 4088, negative conditional: 0, negative unconditional: 4088, unknown: 494, unknown conditional: 0, unknown unconditional: 494] , Statistics on independence cache: Total cache size (in pairs): 494, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Independence queries for same thread: 1 - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20182.3ms, OverallIterations: 44, TraceHistogramMax: 1, EmptinessCheckTime: 444.2ms, AutomataDifference: 10430.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1043.7ms, PartialOrderReductionTime: 1031.3ms, HoareTripleCheckerStatistics: 2722 SDtfs, 4705 SDslu, 10069 SDs, 0 SdLazy, 12013 SolverSat, 2116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5068.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2072.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12446occurred in iteration=0, InterpolantAutomatonStates: 443, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6048.0ms AutomataMinimizationTime, 44 MinimizatonAttempts, 179764 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 42.1ms SsaConstructionTime, 193.7ms SatisfiabilityAnalysisTime, 1754.3ms InterpolantComputationTime, 1716 NumberOfCodeBlocks, 1716 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1672 ConstructedInterpolants, 0 QuantifiedInterpolants, 4794 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 44 InterpolantComputations, 44 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...