/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.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 05:18:03,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 05:18:03,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 05:18:03,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 05:18:03,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 05:18:03,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 05:18:03,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 05:18:03,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 05:18:03,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 05:18:03,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 05:18:03,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 05:18:03,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 05:18:03,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 05:18:03,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 05:18:03,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 05:18:03,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 05:18:03,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 05:18:03,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 05:18:03,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 05:18:03,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 05:18:03,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 05:18:03,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 05:18:03,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 05:18:03,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 05:18:03,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 05:18:03,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 05:18:03,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 05:18:03,589 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 05:18:03,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 05:18:03,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 05:18:03,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 05:18:03,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 05:18:03,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 05:18:03,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 05:18:03,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 05:18:03,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 05:18:03,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 05:18:03,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 05:18:03,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 05:18:03,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 05:18:03,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 05:18:03,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 05:18:03,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 05:18:03,592 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 05:18:03,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 05:18:03,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 05:18:03,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 05:18:03,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 05:18:03,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 05:18:03,853 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 05:18:03,855 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 05:18:03,855 INFO L432 ainManager$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 05:18:03,856 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 05:18:03,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 05:18:03,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 05:18:03,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 05:18:03,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 05:18:03,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 05:18:04,007 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,012 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 05:18:04,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 05:18:04,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 05:18:04,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 05:18:04,023 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,024 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,024 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,025 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,027 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,027 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,028 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 05:18:03" (1/1) ... [2021-06-05 05:18:04,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 05:18:04,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 05:18:04,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 05:18:04,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 05:18:04,031 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 05:18:03" (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 05:18:04,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 05:18:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 05:18:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 05:18:04,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 05:18:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 05:18:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 05:18:04,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 05:18:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 05:18:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 05:18:04,086 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 05:18:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 05:18:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 05:18:04,087 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 05:18:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 05:18:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 05:18:04,088 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 05:18:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 05:18:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 05:18:04,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-05 05:18:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-05 05:18:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-05 05:18:04,089 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-06-05 05:18:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-06-05 05:18:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-06-05 05:18:04,091 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 05:18:04,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 05:18:04,245 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 05:18:04,252 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:18:04 BoogieIcfgContainer [2021-06-05 05:18:04,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 05:18:04,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 05:18:04,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 05:18:04,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 05:18:04,256 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 05:18:03" (1/2) ... [2021-06-05 05:18:04,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db38d9e and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:18:04, skipping insertion in model container [2021-06-05 05:18:04,256 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 05:18:04" (2/2) ... [2021-06-05 05:18:04,257 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-06-05 05:18:04,261 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 05:18:04,261 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 05:18:04,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 05:18:04,262 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 05:18:04,362 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-06-05 05:18:04,375 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-06-05 05:18:04,398 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 05:18:04,398 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 05:18:04,399 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 05:18:04,399 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 05:18:04,399 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 05:18:04,399 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 05:18:04,399 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 05:18:04,399 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 05:18:04,407 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 62 transitions, 180 flow [2021-06-05 05:26:39,281 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 05:26:40,009 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 05:26:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:26:43,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:26:43,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:26:43,245 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 05:26:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:26:43,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1439959857, now seen corresponding path program 1 times [2021-06-05 05:26:43,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:26:43,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82575038] [2021-06-05 05:26:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:26:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:26:43,502 INFO 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 05:26:43,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:26:43,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82575038] [2021-06-05 05:26:43,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82575038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:26:43,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:26:43,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 05:26:43,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748195796] [2021-06-05 05:26:43,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 05:26:43,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:26:43,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 05:26:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 05:26:44,260 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 05:26:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:26:57,461 INFO L93 Difference]: Finished difference Result 1317036 states and 7638292 transitions. [2021-06-05 05:26:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 05:26:57,462 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 05:26:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:27:06,859 INFO L225 Difference]: With dead ends: 1317036 [2021-06-05 05:27:06,859 INFO L226 Difference]: Without dead ends: 1317036 [2021-06-05 05:27:06,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:27:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317036 states. [2021-06-05 05:27:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317036 to 618049. [2021-06-05 05:28:00,435 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 05:28:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618049 states to 618049 states and 3585736 transitions. [2021-06-05 05:28:07,771 INFO L78 Accepts]: Start accepts. Automaton has 618049 states and 3585736 transitions. Word has length 53 [2021-06-05 05:28:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:28:07,772 INFO L482 AbstractCegarLoop]: Abstraction has 618049 states and 3585736 transitions. [2021-06-05 05:28:07,773 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 05:28:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 618049 states and 3585736 transitions. [2021-06-05 05:28:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 05:28:13,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:28:13,139 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 05:28:13,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 05:28:13,140 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 05:28:13,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:28:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash -654263923, now seen corresponding path program 2 times [2021-06-05 05:28:13,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:28:13,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635884587] [2021-06-05 05:28:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:28:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:28:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:28:13,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:28:13,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635884587] [2021-06-05 05:28:13,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635884587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 05:28:13,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 05:28:13,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 05:28:13,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350266401] [2021-06-05 05:28:13,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 05:28:13,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:28:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 05:28:13,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 05:28:13,321 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)