/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 15:10:51,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 15:10:51,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 15:10:51,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 15:10:51,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 15:10:51,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 15:10:51,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 15:10:51,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 15:10:51,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 15:10:51,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 15:10:51,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 15:10:51,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 15:10:51,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 15:10:51,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 15:10:51,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 15:10:51,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 15:10:51,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 15:10:51,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 15:10:51,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 15:10:51,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 15:10:51,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 15:10:51,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 15:10:51,439 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 15:10:51,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 15:10:51,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 15:10:51,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 15:10:51,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 15:10:51,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 15:10:51,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 15:10:51,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 15:10:51,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 15:10:51,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 15:10:51,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 15:10:51,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 15:10:51,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 15:10:51,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 15:10:51,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 15:10:51,688 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 15:10:51,689 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 15:10:51,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl [2021-06-05 15:10:51,690 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2021-06-05 15:10:51,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 15:10:51,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 15:10:51,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 15:10:51,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 15:10:51,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 15:10:51,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 15:10:51,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 15:10:51,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 15:10:51,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 15:10:51,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... [2021-06-05 15:10:51,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 15:10:51,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 15:10:51,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 15:10:51,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 15:10:51,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 15:10:51,809 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 15:10:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 15:10:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 15:10:51,809 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 15:10:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 15:10:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 15:10:51,809 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 15:10:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 15:10:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 15:10:51,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 15:10:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 15:10:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 15:10:51,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 15:10:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 15:10:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 15:10:51,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 15:10:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 15:10:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 15:10:51,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-05 15:10:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-05 15:10:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-05 15:10:51,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-06-05 15:10:51,813 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-06-05 15:10:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-06-05 15:10:51,815 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 15:10:51,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 15:10:51,991 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 15:10:51,992 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:10:51 BoogieIcfgContainer [2021-06-05 15:10:51,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 15:10:51,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 15:10:51,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 15:10:52,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 15:10:52,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:10:51" (1/2) ... [2021-06-05 15:10:52,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd718f4 and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:10:52, skipping insertion in model container [2021-06-05 15:10:52,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:10:51" (2/2) ... [2021-06-05 15:10:52,003 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-06-05 15:10:52,006 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 15:10:52,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 15:10:52,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 15:10:52,007 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 15:10:52,074 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-06-05 15:10:52,089 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-06-05 15:10:52,110 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 15:10:52,111 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 15:10:52,111 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 15:10:52,111 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 15:10:52,111 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 15:10:52,111 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 15:10:52,111 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 15:10:52,111 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 15:10:52,124 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 62 transitions, 180 flow [2021-06-05 15:20:48,972 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447902 states, 447900 states have (on average 5.854146014735432) internal successors, (2622072), 447901 states have internal predecessors, (2622072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:20:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 447902 states, 447900 states have (on average 5.854146014735432) internal successors, (2622072), 447901 states have internal predecessors, (2622072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:20:53,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 15:20:53,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:20:53,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:20:53,340 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:20:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:20:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1439959857, now seen corresponding path program 1 times [2021-06-05 15:20:53,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:20:53,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576141027] [2021-06-05 15:20:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:20:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:20:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:20:53,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:20:53,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576141027] [2021-06-05 15:20:53,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576141027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:20:53,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:20:53,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 15:20:53,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980868486] [2021-06-05 15:20:53,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 15:20:53,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:20:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 15:20:53,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 15:20:54,338 INFO L87 Difference]: Start difference. First operand has 447902 states, 447900 states have (on average 5.854146014735432) internal successors, (2622072), 447901 states have internal predecessors, (2622072), 0 states have call successors, (0), 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 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:21:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 15:21:07,760 INFO L93 Difference]: Finished difference Result 1317036 states and 7638292 transitions. [2021-06-05 15:21:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 15:21:07,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 15:21:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 15:21:17,569 INFO L225 Difference]: With dead ends: 1317036 [2021-06-05 15:21:17,569 INFO L226 Difference]: Without dead ends: 1317036 [2021-06-05 15:21:17,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:21:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317036 states. [2021-06-05 15:22:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317036 to 618049. [2021-06-05 15:22:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618049 states, 618048 states have (on average 5.801711193952573) internal successors, (3585736), 618048 states have internal predecessors, (3585736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:22:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618049 states to 618049 states and 3585736 transitions. [2021-06-05 15:22:20,105 INFO L78 Accepts]: Start accepts. Automaton has 618049 states and 3585736 transitions. Word has length 53 [2021-06-05 15:22:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 15:22:20,109 INFO L482 AbstractCegarLoop]: Abstraction has 618049 states and 3585736 transitions. [2021-06-05 15:22:20,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 15:22:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 618049 states and 3585736 transitions. [2021-06-05 15:22:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 15:22:24,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 15:22:24,897 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 15:22:24,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 15:22:24,897 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 15:22:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 15:22:24,901 INFO L82 PathProgramCache]: Analyzing trace with hash -654263923, now seen corresponding path program 2 times [2021-06-05 15:22:24,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 15:22:24,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691174553] [2021-06-05 15:22:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 15:22:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 15:22:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 15:22:25,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 15:22:25,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691174553] [2021-06-05 15:22:25,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691174553] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 15:22:25,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 15:22:25,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 15:22:25,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683570399] [2021-06-05 15:22:25,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 15:22:25,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 15:22:25,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 15:22:25,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 15:22:25,045 INFO L87 Difference]: Start difference. First operand 618049 states and 3585736 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)