/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/pthread_nondet_loop_bound.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 03:15:08,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 03:15:08,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 03:15:08,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 03:15:08,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 03:15:08,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 03:15:08,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 03:15:08,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 03:15:08,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 03:15:08,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 03:15:08,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 03:15:08,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 03:15:08,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 03:15:08,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 03:15:08,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 03:15:08,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 03:15:08,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 03:15:08,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 03:15:08,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 03:15:08,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 03:15:08,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 03:15:08,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 03:15:08,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 03:15:08,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 03:15:08,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 03:15:08,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 03:15:08,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 03:15:08,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 03:15:08,797 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 03:15:08,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 03:15:08,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 03:15:08,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 03:15:08,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 03:15:08,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 03:15:08,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 03:15:08,837 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 03:15:08,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 03:15:08,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 03:15:08,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 03:15:08,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 03:15:08,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 03:15:08,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 03:15:08,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 03:15:08,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 03:15:08,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 03:15:08,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 03:15:08,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 03:15:08,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 03:15:08,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 03:15:08,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 03:15:08,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 03:15:08,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 03:15:08,841 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 03:15:08,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 03:15:08,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 03:15:09,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 03:15:09,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 03:15:09,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 03:15:09,172 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 03:15:09,173 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 03:15:09,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl [2021-06-05 03:15:09,174 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl' [2021-06-05 03:15:09,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 03:15:09,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 03:15:09,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 03:15:09,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 03:15:09,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 03:15:09,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 03:15:09,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 03:15:09,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 03:15:09,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 03:15:09,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/1) ... [2021-06-05 03:15:09,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 03:15:09,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 03:15:09,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 03:15:09,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 03:15:09,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (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 03:15:09,341 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 03:15:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 03:15:09,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 03:15:09,342 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-06-05 03:15:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-05 03:15:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-05 03:15:09,343 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 03:15:09,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 03:15:09,449 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 03:15:09,450 INFO L202 PluginConnector]: Adding new model pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:15:09 BoogieIcfgContainer [2021-06-05 03:15:09,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 03:15:09,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 03:15:09,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 03:15:09,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 03:15:09,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 03:15:09" (1/2) ... [2021-06-05 03:15:09,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f69b107 and model type pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 03:15:09, skipping insertion in model container [2021-06-05 03:15:09,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 03:15:09" (2/2) ... [2021-06-05 03:15:09,456 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread_nondet_loop_bound.bpl [2021-06-05 03:15:09,461 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 03:15:09,461 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 03:15:09,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 03:15:09,462 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 03:15:09,477 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,478 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,478 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,479 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,481 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,484 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 03:15:09,502 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 03:15:09,517 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:15:09,517 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:15:09,517 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:15:09,518 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:15:09,518 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:15:09,518 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:15:09,518 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:15:09,518 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:15:09,525 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 13 transitions, 31 flow [2021-06-05 03:15:09,535 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 03:15:09,542 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:09,543 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-06-05 03:15:09,543 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 03:15:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:09,548 INFO L82 PathProgramCache]: Analyzing trace with hash 268777336, now seen corresponding path program 1 times [2021-06-05 03:15:09,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:09,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051715921] [2021-06-05 03:15:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:09,633 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:09,653 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:09,666 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 03:15:09,667 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 03:15:09,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 03:15:09,667 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 03:15:09,667 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 03:15:09,677 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,678 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,678 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,678 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,679 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,679 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,679 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,680 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,680 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,685 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:09,701 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 03:15:09,702 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 03:15:09,703 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:15:09,703 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:15:09,703 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:15:09,703 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:15:09,704 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:15:09,704 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:15:09,704 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:15:09,704 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:15:09,705 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 19 transitions, 50 flow [2021-06-05 03:15:09,732 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 252 states, 241 states have (on average 2.4937759336099585) internal successors, (601), 251 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 241 states have (on average 2.4937759336099585) internal successors, (601), 251 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 03:15:09,734 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:09,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:09,734 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:09,735 INFO L82 PathProgramCache]: Analyzing trace with hash 513720736, now seen corresponding path program 1 times [2021-06-05 03:15:09,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:09,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142209794] [2021-06-05 03:15:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:09,814 INFO 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 03:15:09,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:09,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142209794] [2021-06-05 03:15:09,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142209794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:15:09,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:15:09,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 03:15:09,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352431722] [2021-06-05 03:15:09,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:15:09,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:09,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:15:09,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:15:09,849 INFO L87 Difference]: Start difference. First operand has 252 states, 241 states have (on average 2.4937759336099585) internal successors, (601), 251 states have internal predecessors, (601), 0 states have call successors, (0), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:10,155 INFO L93 Difference]: Finished difference Result 497 states and 1072 transitions. [2021-06-05 03:15:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 03:15:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-06-05 03:15:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:10,180 INFO L225 Difference]: With dead ends: 497 [2021-06-05 03:15:10,180 INFO L226 Difference]: Without dead ends: 403 [2021-06-05 03:15:10,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:15:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-06-05 03:15:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 261. [2021-06-05 03:15:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 254 states have (on average 2.421259842519685) internal successors, (615), 260 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 615 transitions. [2021-06-05 03:15:10,271 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 615 transitions. Word has length 7 [2021-06-05 03:15:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:10,272 INFO L482 AbstractCegarLoop]: Abstraction has 261 states and 615 transitions. [2021-06-05 03:15:10,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:10,272 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 615 transitions. [2021-06-05 03:15:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 03:15:10,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:10,273 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:10,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 03:15:10,273 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:10,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1047128168, now seen corresponding path program 1 times [2021-06-05 03:15:10,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:10,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745278712] [2021-06-05 03:15:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:10,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:10,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745278712] [2021-06-05 03:15:10,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745278712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:10,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263929180] [2021-06-05 03:15:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:10,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 03:15:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:10,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263929180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:10,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:10,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-06-05 03:15:10,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619467295] [2021-06-05 03:15:10,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 03:15:10,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:10,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 03:15:10,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 03:15:10,614 INFO L87 Difference]: Start difference. First operand 261 states and 615 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:10,899 INFO L93 Difference]: Finished difference Result 484 states and 1024 transitions. [2021-06-05 03:15:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 03:15:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-06-05 03:15:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:10,906 INFO L225 Difference]: With dead ends: 484 [2021-06-05 03:15:10,906 INFO L226 Difference]: Without dead ends: 458 [2021-06-05 03:15:10,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 196.2ms TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-06-05 03:15:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-06-05 03:15:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 245. [2021-06-05 03:15:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 238 states have (on average 2.3949579831932772) internal successors, (570), 244 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 570 transitions. [2021-06-05 03:15:10,923 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 570 transitions. Word has length 10 [2021-06-05 03:15:10,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:10,923 INFO L482 AbstractCegarLoop]: Abstraction has 245 states and 570 transitions. [2021-06-05 03:15:10,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 570 transitions. [2021-06-05 03:15:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 03:15:10,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:10,924 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-06-05 03:15:11,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 03:15:11,141 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:11,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:11,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1047115182, now seen corresponding path program 1 times [2021-06-05 03:15:11,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:11,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968088710] [2021-06-05 03:15:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:11,149 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:11,153 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:11,157 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 03:15:11,158 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 03:15:11,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 03:15:11,158 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 03:15:11,158 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-05 03:15:11,162 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,163 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,163 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,163 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,163 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,164 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,164 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,164 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,164 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,164 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,164 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,165 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,166 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,168 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,169 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:11,169 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 03:15:11,169 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 03:15:11,171 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:15:11,171 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:15:11,171 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:15:11,171 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:15:11,171 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:15:11,171 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:15:11,171 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:15:11,171 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:15:11,173 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 25 transitions, 71 flow [2021-06-05 03:15:11,251 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1512 states, 1489 states have (on average 3.264607118871726) internal successors, (4861), 1511 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 1512 states, 1489 states have (on average 3.264607118871726) internal successors, (4861), 1511 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 03:15:11,255 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:11,255 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:11,255 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1966221566, now seen corresponding path program 1 times [2021-06-05 03:15:11,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:11,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961433353] [2021-06-05 03:15:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:11,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:11,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961433353] [2021-06-05 03:15:11,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961433353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:15:11,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:15:11,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 03:15:11,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967336656] [2021-06-05 03:15:11,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:15:11,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:11,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:15:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:15:11,324 INFO L87 Difference]: Start difference. First operand has 1512 states, 1489 states have (on average 3.264607118871726) internal successors, (4861), 1511 states have internal predecessors, (4861), 0 states have call successors, (0), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:11,573 INFO L93 Difference]: Finished difference Result 4185 states and 12022 transitions. [2021-06-05 03:15:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 03:15:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-06-05 03:15:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:11,601 INFO L225 Difference]: With dead ends: 4185 [2021-06-05 03:15:11,601 INFO L226 Difference]: Without dead ends: 3847 [2021-06-05 03:15:11,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:15:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2021-06-05 03:15:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 2031. [2021-06-05 03:15:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2013 states have (on average 3.1917536015896673) internal successors, (6425), 2030 states have internal predecessors, (6425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 6425 transitions. [2021-06-05 03:15:11,705 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 6425 transitions. Word has length 7 [2021-06-05 03:15:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:11,705 INFO L482 AbstractCegarLoop]: Abstraction has 2031 states and 6425 transitions. [2021-06-05 03:15:11,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 6425 transitions. [2021-06-05 03:15:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 03:15:11,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:11,707 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:11,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 03:15:11,707 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:11,708 INFO L82 PathProgramCache]: Analyzing trace with hash 408196648, now seen corresponding path program 1 times [2021-06-05 03:15:11,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:11,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132527538] [2021-06-05 03:15:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:11,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:11,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132527538] [2021-06-05 03:15:11,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132527538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:11,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325218856] [2021-06-05 03:15:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:11,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 03:15:11,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:11,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325218856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:11,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:11,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-06-05 03:15:11,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663453252] [2021-06-05 03:15:11,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 03:15:11,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 03:15:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 03:15:11,875 INFO L87 Difference]: Start difference. First operand 2031 states and 6425 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:12,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:12,209 INFO L93 Difference]: Finished difference Result 5643 states and 16060 transitions. [2021-06-05 03:15:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 03:15:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-06-05 03:15:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:12,241 INFO L225 Difference]: With dead ends: 5643 [2021-06-05 03:15:12,241 INFO L226 Difference]: Without dead ends: 5523 [2021-06-05 03:15:12,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-06-05 03:15:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2021-06-05 03:15:12,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 2232. [2021-06-05 03:15:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2214 states have (on average 3.194218608852755) internal successors, (7072), 2231 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 7072 transitions. [2021-06-05 03:15:12,380 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 7072 transitions. Word has length 10 [2021-06-05 03:15:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:12,380 INFO L482 AbstractCegarLoop]: Abstraction has 2232 states and 7072 transitions. [2021-06-05 03:15:12,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 7072 transitions. [2021-06-05 03:15:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:15:12,382 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:12,382 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:12,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:12,597 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:12,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1819859788, now seen corresponding path program 1 times [2021-06-05 03:15:12,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:12,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290461333] [2021-06-05 03:15:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:12,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:12,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290461333] [2021-06-05 03:15:12,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290461333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:12,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093089859] [2021-06-05 03:15:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:12,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:12,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:12,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093089859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:12,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:12,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-06-05 03:15:12,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027099604] [2021-06-05 03:15:12,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 03:15:12,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:12,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 03:15:12,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-06-05 03:15:12,920 INFO L87 Difference]: Start difference. First operand 2232 states and 7072 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:14,024 INFO L93 Difference]: Finished difference Result 10308 states and 28770 transitions. [2021-06-05 03:15:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 03:15:14,025 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:15:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:14,075 INFO L225 Difference]: With dead ends: 10308 [2021-06-05 03:15:14,075 INFO L226 Difference]: Without dead ends: 10202 [2021-06-05 03:15:14,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 594.8ms TimeCoverageRelationStatistics Valid=561, Invalid=1601, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 03:15:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2021-06-05 03:15:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 2356. [2021-06-05 03:15:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2338 states have (on average 3.1971770744225836) internal successors, (7475), 2355 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 7475 transitions. [2021-06-05 03:15:14,237 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 7475 transitions. Word has length 12 [2021-06-05 03:15:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:14,237 INFO L482 AbstractCegarLoop]: Abstraction has 2356 states and 7475 transitions. [2021-06-05 03:15:14,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 7475 transitions. [2021-06-05 03:15:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:15:14,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:14,238 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:14,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:14,464 INFO L430 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:14,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:14,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1434960332, now seen corresponding path program 2 times [2021-06-05 03:15:14,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:14,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607931502] [2021-06-05 03:15:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:14,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:14,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607931502] [2021-06-05 03:15:14,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607931502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:14,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255542223] [2021-06-05 03:15:14,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:14,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:15:14,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:15:14,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:14,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:14,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255542223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:14,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:14,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:15:14,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553188780] [2021-06-05 03:15:14,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:15:14,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:14,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:15:14,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:15:14,762 INFO L87 Difference]: Start difference. First operand 2356 states and 7475 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:16,117 INFO L93 Difference]: Finished difference Result 12289 states and 34176 transitions. [2021-06-05 03:15:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 03:15:16,117 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:15:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:16,164 INFO L225 Difference]: With dead ends: 12289 [2021-06-05 03:15:16,165 INFO L226 Difference]: Without dead ends: 12109 [2021-06-05 03:15:16,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 714.2ms TimeCoverageRelationStatistics Valid=883, Invalid=2657, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 03:15:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12109 states. [2021-06-05 03:15:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12109 to 2303. [2021-06-05 03:15:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2285 states have (on average 3.177242888402626) internal successors, (7260), 2302 states have internal predecessors, (7260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 7260 transitions. [2021-06-05 03:15:16,349 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 7260 transitions. Word has length 12 [2021-06-05 03:15:16,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:16,349 INFO L482 AbstractCegarLoop]: Abstraction has 2303 states and 7260 transitions. [2021-06-05 03:15:16,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 7260 transitions. [2021-06-05 03:15:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:15:16,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:16,352 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:16,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:16,569 INFO L430 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 35510376, now seen corresponding path program 3 times [2021-06-05 03:15:16,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:16,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096181638] [2021-06-05 03:15:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:16,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:16,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096181638] [2021-06-05 03:15:16,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096181638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:16,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878364378] [2021-06-05 03:15:16,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:16,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 03:15:16,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:15:16,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:16,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:16,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878364378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:16,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:16,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-06-05 03:15:16,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203648794] [2021-06-05 03:15:16,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 03:15:16,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:16,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 03:15:16,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 03:15:16,853 INFO L87 Difference]: Start difference. First operand 2303 states and 7260 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:17,774 INFO L93 Difference]: Finished difference Result 9043 states and 24899 transitions. [2021-06-05 03:15:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 03:15:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:15:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:17,805 INFO L225 Difference]: With dead ends: 9043 [2021-06-05 03:15:17,805 INFO L226 Difference]: Without dead ends: 8949 [2021-06-05 03:15:17,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 571.9ms TimeCoverageRelationStatistics Valid=667, Invalid=1985, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 03:15:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2021-06-05 03:15:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 2272. [2021-06-05 03:15:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2254 states have (on average 3.170807453416149) internal successors, (7147), 2271 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 7147 transitions. [2021-06-05 03:15:17,976 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 7147 transitions. Word has length 12 [2021-06-05 03:15:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:17,976 INFO L482 AbstractCegarLoop]: Abstraction has 2272 states and 7147 transitions. [2021-06-05 03:15:17,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 7147 transitions. [2021-06-05 03:15:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:15:17,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:17,978 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:18,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:18,193 INFO L430 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash -825742738, now seen corresponding path program 4 times [2021-06-05 03:15:18,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:18,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086741707] [2021-06-05 03:15:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:18,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:18,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086741707] [2021-06-05 03:15:18,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086741707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:18,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645463511] [2021-06-05 03:15:18,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:18,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 03:15:18,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:15:18,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:18,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:18,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645463511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:18,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:18,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-06-05 03:15:18,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480758656] [2021-06-05 03:15:18,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 03:15:18,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:18,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 03:15:18,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 03:15:18,399 INFO L87 Difference]: Start difference. First operand 2272 states and 7147 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:19,743 INFO L93 Difference]: Finished difference Result 10689 states and 29224 transitions. [2021-06-05 03:15:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 03:15:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:15:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:19,773 INFO L225 Difference]: With dead ends: 10689 [2021-06-05 03:15:19,774 INFO L226 Difference]: Without dead ends: 10597 [2021-06-05 03:15:19,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 752.7ms TimeCoverageRelationStatistics Valid=1000, Invalid=3160, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 03:15:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10597 states. [2021-06-05 03:15:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10597 to 1994. [2021-06-05 03:15:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1979 states have (on average 3.1773623041940375) internal successors, (6288), 1993 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 6288 transitions. [2021-06-05 03:15:19,911 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 6288 transitions. Word has length 12 [2021-06-05 03:15:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:19,911 INFO L482 AbstractCegarLoop]: Abstraction has 1994 states and 6288 transitions. [2021-06-05 03:15:19,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 6288 transitions. [2021-06-05 03:15:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-05 03:15:19,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:19,912 INFO L521 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:20,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:20,135 INFO L430 AbstractCegarLoop]: === Iteration 7 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1147361507, now seen corresponding path program 1 times [2021-06-05 03:15:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:20,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713524299] [2021-06-05 03:15:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:20,140 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:20,143 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:20,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 03:15:20,144 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 03:15:20,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 03:15:20,145 WARN L242 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 03:15:20,145 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-06-05 03:15:20,150 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,151 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,151 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,151 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,151 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,152 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,152 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,152 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,152 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,152 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,152 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,153 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,153 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,153 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,153 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,154 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,155 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,155 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:20,156 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 03:15:20,156 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-05 03:15:20,157 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:15:20,157 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:15:20,157 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:15:20,157 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:15:20,157 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:15:20,157 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:15:20,157 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:15:20,157 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:15:20,158 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 31 transitions, 94 flow [2021-06-05 03:15:20,764 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9072 states, 9025 states have (on average 4.068808864265928) internal successors, (36721), 9071 states have internal predecessors, (36721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 9072 states, 9025 states have (on average 4.068808864265928) internal successors, (36721), 9071 states have internal predecessors, (36721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 03:15:20,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:20,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:20,787 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:20,788 INFO L82 PathProgramCache]: Analyzing trace with hash 331295731, now seen corresponding path program 1 times [2021-06-05 03:15:20,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:20,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107934796] [2021-06-05 03:15:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:20,815 INFO 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 03:15:20,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:20,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107934796] [2021-06-05 03:15:20,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107934796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:15:20,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:15:20,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 03:15:20,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586548616] [2021-06-05 03:15:20,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:15:20,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:15:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:15:20,839 INFO L87 Difference]: Start difference. First operand has 9072 states, 9025 states have (on average 4.068808864265928) internal successors, (36721), 9071 states have internal predecessors, (36721), 0 states have call successors, (0), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:21,213 INFO L93 Difference]: Finished difference Result 29977 states and 108006 transitions. [2021-06-05 03:15:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 03:15:21,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-06-05 03:15:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:21,306 INFO L225 Difference]: With dead ends: 29977 [2021-06-05 03:15:21,306 INFO L226 Difference]: Without dead ends: 28891 [2021-06-05 03:15:21,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:15:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28891 states. [2021-06-05 03:15:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28891 to 14115. [2021-06-05 03:15:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14115 states, 14074 states have (on average 3.9532471223532757) internal successors, (55638), 14114 states have internal predecessors, (55638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14115 states to 14115 states and 55638 transitions. [2021-06-05 03:15:22,269 INFO L78 Accepts]: Start accepts. Automaton has 14115 states and 55638 transitions. Word has length 7 [2021-06-05 03:15:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:22,269 INFO L482 AbstractCegarLoop]: Abstraction has 14115 states and 55638 transitions. [2021-06-05 03:15:22,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 14115 states and 55638 transitions. [2021-06-05 03:15:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 03:15:22,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:22,270 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:22,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 03:15:22,270 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash -590120179, now seen corresponding path program 1 times [2021-06-05 03:15:22,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:22,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873886485] [2021-06-05 03:15:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:22,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:22,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873886485] [2021-06-05 03:15:22,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873886485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:22,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348192345] [2021-06-05 03:15:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:22,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 03:15:22,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:22,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348192345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:22,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:22,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-06-05 03:15:22,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710540126] [2021-06-05 03:15:22,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 03:15:22,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:22,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 03:15:22,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 03:15:22,441 INFO L87 Difference]: Start difference. First operand 14115 states and 55638 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:23,090 INFO L93 Difference]: Finished difference Result 44845 states and 160671 transitions. [2021-06-05 03:15:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 03:15:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-06-05 03:15:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:23,217 INFO L225 Difference]: With dead ends: 44845 [2021-06-05 03:15:23,217 INFO L226 Difference]: Without dead ends: 44427 [2021-06-05 03:15:23,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 173.2ms TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-06-05 03:15:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44427 states. [2021-06-05 03:15:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44427 to 16232. [2021-06-05 03:15:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16232 states, 16191 states have (on average 3.9700450867766044) internal successors, (64279), 16231 states have internal predecessors, (64279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16232 states to 16232 states and 64279 transitions. [2021-06-05 03:15:24,343 INFO L78 Accepts]: Start accepts. Automaton has 16232 states and 64279 transitions. Word has length 10 [2021-06-05 03:15:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:24,344 INFO L482 AbstractCegarLoop]: Abstraction has 16232 states and 64279 transitions. [2021-06-05 03:15:24,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 16232 states and 64279 transitions. [2021-06-05 03:15:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:15:24,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:24,344 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:24,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:24,569 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:24,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1450030414, now seen corresponding path program 1 times [2021-06-05 03:15:24,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:24,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507758243] [2021-06-05 03:15:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:24,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:24,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507758243] [2021-06-05 03:15:24,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507758243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:24,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228614309] [2021-06-05 03:15:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:24,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:24,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:24,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228614309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:24,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:24,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-06-05 03:15:24,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904154797] [2021-06-05 03:15:24,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 03:15:24,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:24,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 03:15:24,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 03:15:24,798 INFO L87 Difference]: Start difference. First operand 16232 states and 64279 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:25,042 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2021-06-05 03:15:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:26,826 INFO L93 Difference]: Finished difference Result 101988 states and 352819 transitions. [2021-06-05 03:15:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 03:15:26,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:15:26,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:27,343 INFO L225 Difference]: With dead ends: 101988 [2021-06-05 03:15:27,344 INFO L226 Difference]: Without dead ends: 101682 [2021-06-05 03:15:27,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 890.9ms TimeCoverageRelationStatistics Valid=1000, Invalid=3160, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 03:15:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101682 states. [2021-06-05 03:15:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101682 to 17739. [2021-06-05 03:15:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 17698 states have (on average 4.020906317097977) internal successors, (71162), 17738 states have internal predecessors, (71162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 71162 transitions. [2021-06-05 03:15:28,894 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 71162 transitions. Word has length 12 [2021-06-05 03:15:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:28,895 INFO L482 AbstractCegarLoop]: Abstraction has 17739 states and 71162 transitions. [2021-06-05 03:15:28,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 71162 transitions. [2021-06-05 03:15:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:15:28,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:28,896 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:29,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 03:15:29,098 INFO L430 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:29,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:29,098 INFO L82 PathProgramCache]: Analyzing trace with hash -169812180, now seen corresponding path program 2 times [2021-06-05 03:15:29,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:29,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403131070] [2021-06-05 03:15:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:29,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:29,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403131070] [2021-06-05 03:15:29,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403131070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:29,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497720491] [2021-06-05 03:15:29,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:29,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:15:29,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:15:29,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:29,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:29,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497720491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:29,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:29,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:15:29,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329987059] [2021-06-05 03:15:29,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:15:29,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:15:29,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:15:29,297 INFO L87 Difference]: Start difference. First operand 17739 states and 71162 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:31,403 INFO L93 Difference]: Finished difference Result 108176 states and 379320 transitions. [2021-06-05 03:15:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 03:15:31,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:15:31,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:31,740 INFO L225 Difference]: With dead ends: 108176 [2021-06-05 03:15:31,740 INFO L226 Difference]: Without dead ends: 107568 [2021-06-05 03:15:31,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 755.8ms TimeCoverageRelationStatistics Valid=883, Invalid=2657, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 03:15:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107568 states. [2021-06-05 03:15:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107568 to 16516. [2021-06-05 03:15:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16516 states, 16478 states have (on average 3.9538172108265566) internal successors, (65151), 16515 states have internal predecessors, (65151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16516 states to 16516 states and 65151 transitions. [2021-06-05 03:15:33,346 INFO L78 Accepts]: Start accepts. Automaton has 16516 states and 65151 transitions. Word has length 12 [2021-06-05 03:15:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:33,346 INFO L482 AbstractCegarLoop]: Abstraction has 16516 states and 65151 transitions. [2021-06-05 03:15:33,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16516 states and 65151 transitions. [2021-06-05 03:15:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-05 03:15:33,346 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:33,346 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:33,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 03:15:33,547 INFO L430 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:33,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1503398707, now seen corresponding path program 1 times [2021-06-05 03:15:33,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:33,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418084681] [2021-06-05 03:15:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 03:15:33,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:33,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418084681] [2021-06-05 03:15:33,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418084681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:33,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328246672] [2021-06-05 03:15:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:33,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 03:15:33,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:33,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328246672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:33,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:33,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-06-05 03:15:33,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117760516] [2021-06-05 03:15:33,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:15:33,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:33,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:15:33,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:15:33,712 INFO L87 Difference]: Start difference. First operand 16516 states and 65151 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:34,417 INFO L93 Difference]: Finished difference Result 51303 states and 185776 transitions. [2021-06-05 03:15:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 03:15:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-05 03:15:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:34,570 INFO L225 Difference]: With dead ends: 51303 [2021-06-05 03:15:34,570 INFO L226 Difference]: Without dead ends: 50767 [2021-06-05 03:15:34,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2021-06-05 03:15:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50767 states. [2021-06-05 03:15:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50767 to 18338. [2021-06-05 03:15:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18338 states, 18300 states have (on average 3.969672131147541) internal successors, (72645), 18337 states have internal predecessors, (72645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18338 states to 18338 states and 72645 transitions. [2021-06-05 03:15:35,655 INFO L78 Accepts]: Start accepts. Automaton has 18338 states and 72645 transitions. Word has length 13 [2021-06-05 03:15:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:35,657 INFO L482 AbstractCegarLoop]: Abstraction has 18338 states and 72645 transitions. [2021-06-05 03:15:35,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 18338 states and 72645 transitions. [2021-06-05 03:15:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:15:35,658 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:35,658 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:35,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-05 03:15:35,861 INFO L430 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:35,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1459288340, now seen corresponding path program 1 times [2021-06-05 03:15:35,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:35,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209772767] [2021-06-05 03:15:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 03:15:35,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:35,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209772767] [2021-06-05 03:15:35,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209772767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:35,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264725127] [2021-06-05 03:15:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:35,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:15:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:36,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264725127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:36,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:36,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-06-05 03:15:36,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404683611] [2021-06-05 03:15:36,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 03:15:36,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 03:15:36,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 03:15:36,116 INFO L87 Difference]: Start difference. First operand 18338 states and 72645 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:38,000 INFO L93 Difference]: Finished difference Result 91160 states and 331217 transitions. [2021-06-05 03:15:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 03:15:38,000 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:15:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:38,278 INFO L225 Difference]: With dead ends: 91160 [2021-06-05 03:15:38,278 INFO L226 Difference]: Without dead ends: 90874 [2021-06-05 03:15:38,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 798.7ms TimeCoverageRelationStatistics Valid=823, Invalid=2717, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 03:15:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90874 states. [2021-06-05 03:15:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90874 to 19300. [2021-06-05 03:15:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19300 states, 19262 states have (on average 4.003737929602326) internal successors, (77120), 19299 states have internal predecessors, (77120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19300 states to 19300 states and 77120 transitions. [2021-06-05 03:15:39,833 INFO L78 Accepts]: Start accepts. Automaton has 19300 states and 77120 transitions. Word has length 15 [2021-06-05 03:15:39,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:39,833 INFO L482 AbstractCegarLoop]: Abstraction has 19300 states and 77120 transitions. [2021-06-05 03:15:39,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 19300 states and 77120 transitions. [2021-06-05 03:15:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:15:39,835 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:39,835 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:40,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 03:15:40,046 INFO L430 AbstractCegarLoop]: === Iteration 7 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:40,046 INFO L82 PathProgramCache]: Analyzing trace with hash 210295032, now seen corresponding path program 1 times [2021-06-05 03:15:40,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:40,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995185632] [2021-06-05 03:15:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 03:15:40,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:40,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995185632] [2021-06-05 03:15:40,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995185632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:40,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203043854] [2021-06-05 03:15:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:40,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:15:40,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:40,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203043854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:40,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:40,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-06-05 03:15:40,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097489193] [2021-06-05 03:15:40,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:15:40,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:40,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:15:40,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:15:40,245 INFO L87 Difference]: Start difference. First operand 19300 states and 77120 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:42,179 INFO L93 Difference]: Finished difference Result 95001 states and 347884 transitions. [2021-06-05 03:15:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 03:15:42,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:15:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:42,502 INFO L225 Difference]: With dead ends: 95001 [2021-06-05 03:15:42,502 INFO L226 Difference]: Without dead ends: 94661 [2021-06-05 03:15:42,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 757.2ms TimeCoverageRelationStatistics Valid=625, Invalid=2027, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 03:15:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94661 states. [2021-06-05 03:15:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94661 to 20612. [2021-06-05 03:15:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20612 states, 20574 states have (on average 4.044619422572178) internal successors, (83214), 20611 states have internal predecessors, (83214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20612 states to 20612 states and 83214 transitions. [2021-06-05 03:15:44,176 INFO L78 Accepts]: Start accepts. Automaton has 20612 states and 83214 transitions. Word has length 15 [2021-06-05 03:15:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:44,177 INFO L482 AbstractCegarLoop]: Abstraction has 20612 states and 83214 transitions. [2021-06-05 03:15:44,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 20612 states and 83214 transitions. [2021-06-05 03:15:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:15:44,178 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:44,178 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:44,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 03:15:44,378 INFO L430 AbstractCegarLoop]: === Iteration 8 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:44,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1657134634, now seen corresponding path program 2 times [2021-06-05 03:15:44,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:44,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989072574] [2021-06-05 03:15:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:44,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:44,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989072574] [2021-06-05 03:15:44,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989072574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:44,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870637641] [2021-06-05 03:15:44,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:44,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:15:44,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:15:44,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:44,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:44,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870637641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:44,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:44,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-06-05 03:15:44,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40073360] [2021-06-05 03:15:44,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 03:15:44,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:44,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 03:15:44,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 03:15:44,601 INFO L87 Difference]: Start difference. First operand 20612 states and 83214 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:46,119 INFO L93 Difference]: Finished difference Result 72828 states and 270057 transitions. [2021-06-05 03:15:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 03:15:46,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:15:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:46,330 INFO L225 Difference]: With dead ends: 72828 [2021-06-05 03:15:46,330 INFO L226 Difference]: Without dead ends: 72206 [2021-06-05 03:15:46,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 513.6ms TimeCoverageRelationStatistics Valid=513, Invalid=1467, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 03:15:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72206 states. [2021-06-05 03:15:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72206 to 19478. [2021-06-05 03:15:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19478 states, 19440 states have (on average 3.9830246913580245) internal successors, (77430), 19477 states have internal predecessors, (77430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19478 states to 19478 states and 77430 transitions. [2021-06-05 03:15:47,655 INFO L78 Accepts]: Start accepts. Automaton has 19478 states and 77430 transitions. Word has length 15 [2021-06-05 03:15:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:47,655 INFO L482 AbstractCegarLoop]: Abstraction has 19478 states and 77430 transitions. [2021-06-05 03:15:47,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 19478 states and 77430 transitions. [2021-06-05 03:15:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:15:47,657 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:47,657 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:47,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:47,873 INFO L430 AbstractCegarLoop]: === Iteration 9 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:47,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1657139604, now seen corresponding path program 2 times [2021-06-05 03:15:47,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:47,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621655288] [2021-06-05 03:15:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:47,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:47,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621655288] [2021-06-05 03:15:47,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621655288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:47,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429241024] [2021-06-05 03:15:47,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:47,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:15:47,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:15:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:47,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:15:48,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429241024] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:48,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:48,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-06-05 03:15:48,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161799294] [2021-06-05 03:15:48,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 03:15:48,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:48,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 03:15:48,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 03:15:48,100 INFO L87 Difference]: Start difference. First operand 19478 states and 77430 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:49,607 INFO L93 Difference]: Finished difference Result 75366 states and 279770 transitions. [2021-06-05 03:15:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 03:15:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:15:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:49,820 INFO L225 Difference]: With dead ends: 75366 [2021-06-05 03:15:49,820 INFO L226 Difference]: Without dead ends: 74676 [2021-06-05 03:15:49,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 711.9ms TimeCoverageRelationStatistics Valid=513, Invalid=1467, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 03:15:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74676 states. [2021-06-05 03:15:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74676 to 18360. [2021-06-05 03:15:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18360 states, 18322 states have (on average 3.9326492740967143) internal successors, (72054), 18359 states have internal predecessors, (72054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18360 states to 18360 states and 72054 transitions. [2021-06-05 03:15:50,968 INFO L78 Accepts]: Start accepts. Automaton has 18360 states and 72054 transitions. Word has length 15 [2021-06-05 03:15:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:50,968 INFO L482 AbstractCegarLoop]: Abstraction has 18360 states and 72054 transitions. [2021-06-05 03:15:50,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18360 states and 72054 transitions. [2021-06-05 03:15:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 03:15:50,969 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:50,970 INFO L521 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:51,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:51,170 INFO L430 AbstractCegarLoop]: === Iteration 10 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash -70336879, now seen corresponding path program 1 times [2021-06-05 03:15:51,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:51,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367099472] [2021-06-05 03:15:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-05 03:15:51,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:15:51,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367099472] [2021-06-05 03:15:51,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367099472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:51,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288823584] [2021-06-05 03:15:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:15:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:15:51,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:15:51,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:15:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:15:51,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288823584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:15:51,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:15:51,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2021-06-05 03:15:51,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275446189] [2021-06-05 03:15:51,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 03:15:51,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:15:51,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 03:15:51,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 03:15:51,542 INFO L87 Difference]: Start difference. First operand 18360 states and 72054 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:15:52,198 INFO L93 Difference]: Finished difference Result 53793 states and 197463 transitions. [2021-06-05 03:15:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 03:15:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 03:15:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:15:52,374 INFO L225 Difference]: With dead ends: 53793 [2021-06-05 03:15:52,374 INFO L226 Difference]: Without dead ends: 53239 [2021-06-05 03:15:52,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 394.9ms TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2021-06-05 03:15:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53239 states. [2021-06-05 03:15:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53239 to 19292. [2021-06-05 03:15:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19292 states, 19254 states have (on average 3.9399085904227693) internal successors, (75859), 19291 states have internal predecessors, (75859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19292 states to 19292 states and 75859 transitions. [2021-06-05 03:15:53,391 INFO L78 Accepts]: Start accepts. Automaton has 19292 states and 75859 transitions. Word has length 16 [2021-06-05 03:15:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:15:53,391 INFO L482 AbstractCegarLoop]: Abstraction has 19292 states and 75859 transitions. [2021-06-05 03:15:53,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:15:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 19292 states and 75859 transitions. [2021-06-05 03:15:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 03:15:53,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:15:53,393 INFO L521 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:15:53,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-05 03:15:53,595 INFO L430 AbstractCegarLoop]: === Iteration 11 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:15:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:15:53,595 INFO L82 PathProgramCache]: Analyzing trace with hash -70359785, now seen corresponding path program 1 times [2021-06-05 03:15:53,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:15:53,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32599208] [2021-06-05 03:15:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:15:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:53,599 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 03:15:53,602 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 03:15:53,603 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 03:15:53,603 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 03:15:53,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 03:15:53,604 WARN L242 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 03:15:53,604 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-06-05 03:15:53,614 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,615 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,615 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,615 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,615 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,615 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,615 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,616 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,617 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,617 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,617 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,617 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,617 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,617 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,619 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,622 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,624 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,624 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 03:15:53,625 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 03:15:53,626 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-05 03:15:53,626 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 03:15:53,626 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 03:15:53,626 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 03:15:53,626 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 03:15:53,626 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 03:15:53,626 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 03:15:53,627 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 03:15:53,627 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 03:15:53,629 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 37 transitions, 119 flow [2021-06-05 03:16:08,322 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54432 states, 54337 states have (on average 4.889504389274343) internal successors, (265681), 54431 states have internal predecessors, (265681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 54432 states, 54337 states have (on average 4.889504389274343) internal successors, (265681), 54431 states have internal predecessors, (265681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 03:16:08,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:16:08,394 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:16:08,394 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:16:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:16:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash -96074578, now seen corresponding path program 1 times [2021-06-05 03:16:08,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:16:08,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029896048] [2021-06-05 03:16:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:16:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:16:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:16:08,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:16:08,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029896048] [2021-06-05 03:16:08,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029896048] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 03:16:08,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 03:16:08,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 03:16:08,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947011226] [2021-06-05 03:16:08,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 03:16:08,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:16:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 03:16:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 03:16:08,508 INFO L87 Difference]: Start difference. First operand has 54432 states, 54337 states have (on average 4.889504389274343) internal successors, (265681), 54431 states have internal predecessors, (265681), 0 states have call successors, (0), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:16:10,472 INFO L93 Difference]: Finished difference Result 198697 states and 862114 transitions. [2021-06-05 03:16:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 03:16:10,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-06-05 03:16:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:16:11,289 INFO L225 Difference]: With dead ends: 198697 [2021-06-05 03:16:11,290 INFO L226 Difference]: Without dead ends: 195351 [2021-06-05 03:16:11,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 66.3ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-06-05 03:16:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195351 states. [2021-06-05 03:16:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195351 to 93243. [2021-06-05 03:16:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93243 states, 93155 states have (on average 4.706016853631045) internal successors, (438389), 93242 states have internal predecessors, (438389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93243 states to 93243 states and 438389 transitions. [2021-06-05 03:16:18,229 INFO L78 Accepts]: Start accepts. Automaton has 93243 states and 438389 transitions. Word has length 7 [2021-06-05 03:16:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:16:18,229 INFO L482 AbstractCegarLoop]: Abstraction has 93243 states and 438389 transitions. [2021-06-05 03:16:18,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 93243 states and 438389 transitions. [2021-06-05 03:16:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 03:16:18,230 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:16:18,230 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:16:18,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 03:16:18,230 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:16:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:16:18,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1947837208, now seen corresponding path program 1 times [2021-06-05 03:16:18,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:16:18,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60873635] [2021-06-05 03:16:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:16:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:16:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:16:18,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:16:18,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60873635] [2021-06-05 03:16:18,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60873635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:16:18,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181588957] [2021-06-05 03:16:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:16:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:16:18,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 03:16:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:16:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:16:18,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181588957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:16:18,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:16:18,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-06-05 03:16:18,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525568249] [2021-06-05 03:16:18,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 03:16:18,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:16:18,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 03:16:18,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 03:16:18,363 INFO L87 Difference]: Start difference. First operand 93243 states and 438389 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:16:21,659 INFO L93 Difference]: Finished difference Result 307965 states and 1328623 transitions. [2021-06-05 03:16:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 03:16:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-06-05 03:16:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:16:23,486 INFO L225 Difference]: With dead ends: 307965 [2021-06-05 03:16:23,486 INFO L226 Difference]: Without dead ends: 306637 [2021-06-05 03:16:23,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-06-05 03:16:27,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306637 states. [2021-06-05 03:16:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306637 to 108474. [2021-06-05 03:16:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108474 states, 108386 states have (on average 4.731339840938866) internal successors, (512811), 108473 states have internal predecessors, (512811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108474 states to 108474 states and 512811 transitions. [2021-06-05 03:16:32,974 INFO L78 Accepts]: Start accepts. Automaton has 108474 states and 512811 transitions. Word has length 10 [2021-06-05 03:16:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:16:32,974 INFO L482 AbstractCegarLoop]: Abstraction has 108474 states and 512811 transitions. [2021-06-05 03:16:32,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 108474 states and 512811 transitions. [2021-06-05 03:16:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:16:32,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:16:32,975 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:16:33,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:16:33,188 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:16:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:16:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash 734181959, now seen corresponding path program 1 times [2021-06-05 03:16:33,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:16:33,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653951474] [2021-06-05 03:16:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:16:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:16:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:16:33,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:16:33,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653951474] [2021-06-05 03:16:33,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653951474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:16:33,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910249746] [2021-06-05 03:16:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:16:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:16:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:16:33,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:16:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:16:33,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910249746] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:16:33,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:16:33,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:16:33,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290431332] [2021-06-05 03:16:33,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:16:33,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:16:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:16:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:16:33,387 INFO L87 Difference]: Start difference. First operand 108474 states and 512811 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:16:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:16:40,883 INFO L93 Difference]: Finished difference Result 725636 states and 3060802 transitions. [2021-06-05 03:16:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 03:16:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:16:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:16:44,708 INFO L225 Difference]: With dead ends: 725636 [2021-06-05 03:16:44,709 INFO L226 Difference]: Without dead ends: 723738 [2021-06-05 03:16:44,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 588.1ms TimeCoverageRelationStatistics Valid=883, Invalid=2657, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 03:16:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723738 states. [2021-06-05 03:17:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723738 to 111695. [2021-06-05 03:17:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111695 states, 111607 states have (on average 4.715394195704571) internal successors, (526271), 111694 states have internal predecessors, (526271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111695 states to 111695 states and 526271 transitions. [2021-06-05 03:17:02,265 INFO L78 Accepts]: Start accepts. Automaton has 111695 states and 526271 transitions. Word has length 12 [2021-06-05 03:17:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:02,266 INFO L482 AbstractCegarLoop]: Abstraction has 111695 states and 526271 transitions. [2021-06-05 03:17:02,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 111695 states and 526271 transitions. [2021-06-05 03:17:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:17:02,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:02,266 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:02,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 03:17:02,467 INFO L430 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:02,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:02,467 INFO L82 PathProgramCache]: Analyzing trace with hash 729420359, now seen corresponding path program 2 times [2021-06-05 03:17:02,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:02,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622554291] [2021-06-05 03:17:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:02,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:02,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622554291] [2021-06-05 03:17:02,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622554291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:17:02,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094777073] [2021-06-05 03:17:02,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:17:02,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:17:02,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:17:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:17:02,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:17:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:02,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094777073] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:17:02,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:17:02,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:17:02,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051138659] [2021-06-05 03:17:02,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:17:02,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:17:02,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:17:02,661 INFO L87 Difference]: Start difference. First operand 111695 states and 526271 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:03,911 WARN L205 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-05 03:17:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:09,572 INFO L93 Difference]: Finished difference Result 575859 states and 2442615 transitions. [2021-06-05 03:17:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 03:17:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:17:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:14,139 INFO L225 Difference]: With dead ends: 575859 [2021-06-05 03:17:14,139 INFO L226 Difference]: Without dead ends: 573959 [2021-06-05 03:17:14,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1234.0ms TimeCoverageRelationStatistics Valid=538, Invalid=1532, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 03:17:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573959 states. [2021-06-05 03:17:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573959 to 117843. [2021-06-05 03:17:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117843 states, 117755 states have (on average 4.7105091078935075) internal successors, (554686), 117842 states have internal predecessors, (554686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117843 states to 117843 states and 554686 transitions. [2021-06-05 03:17:29,627 INFO L78 Accepts]: Start accepts. Automaton has 117843 states and 554686 transitions. Word has length 12 [2021-06-05 03:17:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:29,627 INFO L482 AbstractCegarLoop]: Abstraction has 117843 states and 554686 transitions. [2021-06-05 03:17:29,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 117843 states and 554686 transitions. [2021-06-05 03:17:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:17:29,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:29,627 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:29,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-05 03:17:29,828 INFO L430 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash -19820943, now seen corresponding path program 3 times [2021-06-05 03:17:29,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:29,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124311969] [2021-06-05 03:17:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:29,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:29,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124311969] [2021-06-05 03:17:29,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124311969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:17:29,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412563412] [2021-06-05 03:17:29,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:17:29,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 03:17:29,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:17:29,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:17:29,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:17:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:30,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412563412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:17:30,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:17:30,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:17:30,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509004209] [2021-06-05 03:17:30,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:17:30,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:17:30,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:17:30,024 INFO L87 Difference]: Start difference. First operand 117843 states and 554686 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:17:37,204 INFO L93 Difference]: Finished difference Result 662451 states and 2803266 transitions. [2021-06-05 03:17:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 03:17:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:17:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:17:41,036 INFO L225 Difference]: With dead ends: 662451 [2021-06-05 03:17:41,037 INFO L226 Difference]: Without dead ends: 659605 [2021-06-05 03:17:41,037 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 519.9ms TimeCoverageRelationStatistics Valid=743, Invalid=2119, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 03:17:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659605 states. [2021-06-05 03:17:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659605 to 117847. [2021-06-05 03:17:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117847 states, 117759 states have (on average 4.7104085462682255) internal successors, (554693), 117846 states have internal predecessors, (554693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117847 states to 117847 states and 554693 transitions. [2021-06-05 03:17:58,169 INFO L78 Accepts]: Start accepts. Automaton has 117847 states and 554693 transitions. Word has length 12 [2021-06-05 03:17:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:17:58,170 INFO L482 AbstractCegarLoop]: Abstraction has 117847 states and 554693 transitions. [2021-06-05 03:17:58,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:17:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 117847 states and 554693 transitions. [2021-06-05 03:17:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:17:58,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:17:58,171 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:17:58,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-05 03:17:58,395 INFO L430 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:17:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:17:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1767302303, now seen corresponding path program 4 times [2021-06-05 03:17:58,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:17:58,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471738486] [2021-06-05 03:17:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:17:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:17:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:58,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:17:58,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471738486] [2021-06-05 03:17:58,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471738486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:17:58,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188095668] [2021-06-05 03:17:58,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:17:58,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 03:17:58,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:17:58,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:17:58,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:17:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:17:58,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188095668] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:17:58,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:17:58,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:17:58,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75675542] [2021-06-05 03:17:58,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:17:58,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:17:58,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:17:58,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:17:58,589 INFO L87 Difference]: Start difference. First operand 117847 states and 554693 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:08,506 INFO L93 Difference]: Finished difference Result 1013229 states and 4307014 transitions. [2021-06-05 03:18:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 03:18:08,506 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:18:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:15,614 INFO L225 Difference]: With dead ends: 1013229 [2021-06-05 03:18:15,614 INFO L226 Difference]: Without dead ends: 1010863 [2021-06-05 03:18:15,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 676.0ms TimeCoverageRelationStatistics Valid=1164, Invalid=3126, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 03:18:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010863 states. [2021-06-05 03:18:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010863 to 115584. [2021-06-05 03:18:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115584 states, 115496 states have (on average 4.702604419200665) internal successors, (543132), 115583 states have internal predecessors, (543132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115584 states to 115584 states and 543132 transitions. [2021-06-05 03:18:43,858 INFO L78 Accepts]: Start accepts. Automaton has 115584 states and 543132 transitions. Word has length 12 [2021-06-05 03:18:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:18:43,858 INFO L482 AbstractCegarLoop]: Abstraction has 115584 states and 543132 transitions. [2021-06-05 03:18:43,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 115584 states and 543132 transitions. [2021-06-05 03:18:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-05 03:18:43,859 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:18:43,859 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:18:44,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-05 03:18:44,065 INFO L430 AbstractCegarLoop]: === Iteration 7 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:18:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:18:44,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1949126121, now seen corresponding path program 5 times [2021-06-05 03:18:44,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:18:44,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029566959] [2021-06-05 03:18:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:18:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:18:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:18:44,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:18:44,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029566959] [2021-06-05 03:18:44,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029566959] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:18:44,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427678687] [2021-06-05 03:18:44,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:18:44,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:18:44,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:18:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:18:44,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:18:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:18:44,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427678687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:18:44,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:18:44,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-06-05 03:18:44,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999605997] [2021-06-05 03:18:44,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 03:18:44,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:18:44,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 03:18:44,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-06-05 03:18:44,229 INFO L87 Difference]: Start difference. First operand 115584 states and 543132 transitions. Second operand has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:18:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:18:52,000 INFO L93 Difference]: Finished difference Result 754723 states and 3162332 transitions. [2021-06-05 03:18:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 03:18:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-05 03:18:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:18:56,069 INFO L225 Difference]: With dead ends: 754723 [2021-06-05 03:18:56,069 INFO L226 Difference]: Without dead ends: 753775 [2021-06-05 03:18:56,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 644.6ms TimeCoverageRelationStatistics Valid=1000, Invalid=3160, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 03:19:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753775 states. [2021-06-05 03:19:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753775 to 114250. [2021-06-05 03:19:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114250 states, 114165 states have (on average 4.701537248718959) internal successors, (536751), 114249 states have internal predecessors, (536751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114250 states to 114250 states and 536751 transitions. [2021-06-05 03:19:14,280 INFO L78 Accepts]: Start accepts. Automaton has 114250 states and 536751 transitions. Word has length 12 [2021-06-05 03:19:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:14,280 INFO L482 AbstractCegarLoop]: Abstraction has 114250 states and 536751 transitions. [2021-06-05 03:19:14,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 114250 states and 536751 transitions. [2021-06-05 03:19:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-05 03:19:14,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:14,280 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:14,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 03:19:14,485 INFO L430 AbstractCegarLoop]: === Iteration 8 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 898692023, now seen corresponding path program 1 times [2021-06-05 03:19:14,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:14,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695733933] [2021-06-05 03:19:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 03:19:14,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:14,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695733933] [2021-06-05 03:19:14,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695733933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:19:14,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689958353] [2021-06-05 03:19:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:19:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:14,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 03:19:14,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:19:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:14,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689958353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:19:14,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:19:14,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-06-05 03:19:14,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312351752] [2021-06-05 03:19:14,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 03:19:14,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:14,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 03:19:14,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 03:19:14,621 INFO L87 Difference]: Start difference. First operand 114250 states and 536751 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:18,223 INFO L93 Difference]: Finished difference Result 377369 states and 1637422 transitions. [2021-06-05 03:19:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 03:19:18,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-05 03:19:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:20,583 INFO L225 Difference]: With dead ends: 377369 [2021-06-05 03:19:20,583 INFO L226 Difference]: Without dead ends: 375571 [2021-06-05 03:19:20,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2021-06-05 03:19:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375571 states. [2021-06-05 03:19:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375571 to 131520. [2021-06-05 03:19:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131520 states, 131435 states have (on average 4.726731844638034) internal successors, (621258), 131519 states have internal predecessors, (621258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131520 states to 131520 states and 621258 transitions. [2021-06-05 03:19:32,625 INFO L78 Accepts]: Start accepts. Automaton has 131520 states and 621258 transitions. Word has length 13 [2021-06-05 03:19:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:19:32,625 INFO L482 AbstractCegarLoop]: Abstraction has 131520 states and 621258 transitions. [2021-06-05 03:19:32,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 131520 states and 621258 transitions. [2021-06-05 03:19:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:19:32,627 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:19:32,627 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:19:32,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:19:32,827 INFO L430 AbstractCegarLoop]: === Iteration 9 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:19:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:19:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1802851987, now seen corresponding path program 1 times [2021-06-05 03:19:32,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:19:32,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428582944] [2021-06-05 03:19:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:19:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 03:19:32,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:19:32,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428582944] [2021-06-05 03:19:32,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428582944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:19:32,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10515704] [2021-06-05 03:19:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:19:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:19:32,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:19:32,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:19:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:19:33,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10515704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:19:33,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:19:33,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-06-05 03:19:33,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173812540] [2021-06-05 03:19:33,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:19:33,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:19:33,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:19:33,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:19:33,101 INFO L87 Difference]: Start difference. First operand 131520 states and 621258 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:19:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:19:41,548 INFO L93 Difference]: Finished difference Result 686671 states and 2995181 transitions. [2021-06-05 03:19:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 03:19:41,548 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:19:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:19:45,626 INFO L225 Difference]: With dead ends: 686671 [2021-06-05 03:19:45,627 INFO L226 Difference]: Without dead ends: 685685 [2021-06-05 03:19:45,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 633.6ms TimeCoverageRelationStatistics Valid=625, Invalid=2027, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 03:19:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685685 states. [2021-06-05 03:20:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685685 to 143421. [2021-06-05 03:20:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143421 states, 143336 states have (on average 4.776301836244907) internal successors, (684616), 143420 states have internal predecessors, (684616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:20:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143421 states to 143421 states and 684616 transitions. [2021-06-05 03:20:03,702 INFO L78 Accepts]: Start accepts. Automaton has 143421 states and 684616 transitions. Word has length 15 [2021-06-05 03:20:03,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:20:03,703 INFO L482 AbstractCegarLoop]: Abstraction has 143421 states and 684616 transitions. [2021-06-05 03:20:03,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:20:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 143421 states and 684616 transitions. [2021-06-05 03:20:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:20:03,704 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:20:03,704 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:20:03,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-06-05 03:20:03,917 INFO L430 AbstractCegarLoop]: === Iteration 10 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:20:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:20:03,917 INFO L82 PathProgramCache]: Analyzing trace with hash 354605553, now seen corresponding path program 2 times [2021-06-05 03:20:03,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:20:03,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177781283] [2021-06-05 03:20:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:20:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:20:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:20:03,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:20:03,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177781283] [2021-06-05 03:20:03,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177781283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:20:03,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836876174] [2021-06-05 03:20:03,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:20:03,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:20:03,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:20:03,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:20:03,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:20:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:20:04,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836876174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:20:04,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:20:04,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-06-05 03:20:04,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638777512] [2021-06-05 03:20:04,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 03:20:04,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:20:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 03:20:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 03:20:04,100 INFO L87 Difference]: Start difference. First operand 143421 states and 684616 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:20:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:20:11,006 INFO L93 Difference]: Finished difference Result 541284 states and 2394536 transitions. [2021-06-05 03:20:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 03:20:11,017 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:20:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:20:13,558 INFO L225 Difference]: With dead ends: 541284 [2021-06-05 03:20:13,558 INFO L226 Difference]: Without dead ends: 539030 [2021-06-05 03:20:13,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=513, Invalid=1467, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 03:20:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539030 states. [2021-06-05 03:20:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539030 to 137146. [2021-06-05 03:20:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137146 states, 137061 states have (on average 4.715790779288054) internal successors, (646351), 137145 states have internal predecessors, (646351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:20:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137146 states to 137146 states and 646351 transitions. [2021-06-05 03:20:28,456 INFO L78 Accepts]: Start accepts. Automaton has 137146 states and 646351 transitions. Word has length 15 [2021-06-05 03:20:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:20:28,456 INFO L482 AbstractCegarLoop]: Abstraction has 137146 states and 646351 transitions. [2021-06-05 03:20:28,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:20:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 137146 states and 646351 transitions. [2021-06-05 03:20:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:20:28,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:20:28,458 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:20:28,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:20:28,681 INFO L430 AbstractCegarLoop]: === Iteration 11 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:20:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:20:28,681 INFO L82 PathProgramCache]: Analyzing trace with hash 354600598, now seen corresponding path program 1 times [2021-06-05 03:20:28,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:20:28,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549855338] [2021-06-05 03:20:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:20:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:20:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:20:28,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:20:28,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549855338] [2021-06-05 03:20:28,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549855338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:20:28,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187887343] [2021-06-05 03:20:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:20:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:20:28,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:20:28,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:20:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:20:28,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187887343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:20:28,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:20:28,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-06-05 03:20:28,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406250721] [2021-06-05 03:20:28,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 03:20:28,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:20:28,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 03:20:28,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 03:20:28,885 INFO L87 Difference]: Start difference. First operand 137146 states and 646351 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:20:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:20:40,118 INFO L93 Difference]: Finished difference Result 898866 states and 3952976 transitions. [2021-06-05 03:20:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 03:20:40,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:20:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:20:46,055 INFO L225 Difference]: With dead ends: 898866 [2021-06-05 03:20:46,055 INFO L226 Difference]: Without dead ends: 895966 [2021-06-05 03:20:46,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 728.1ms TimeCoverageRelationStatistics Valid=1143, Invalid=3827, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 03:20:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895966 states. [2021-06-05 03:21:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895966 to 143886. [2021-06-05 03:21:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143886 states, 143801 states have (on average 4.714640371068351) internal successors, (677970), 143885 states have internal predecessors, (677970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:21:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143886 states to 143886 states and 677970 transitions. [2021-06-05 03:21:09,286 INFO L78 Accepts]: Start accepts. Automaton has 143886 states and 677970 transitions. Word has length 15 [2021-06-05 03:21:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:21:09,287 INFO L482 AbstractCegarLoop]: Abstraction has 143886 states and 677970 transitions. [2021-06-05 03:21:09,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:21:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 143886 states and 677970 transitions. [2021-06-05 03:21:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:21:09,288 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:21:09,288 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:21:09,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-05 03:21:09,493 INFO L430 AbstractCegarLoop]: === Iteration 12 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:21:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:21:09,493 INFO L82 PathProgramCache]: Analyzing trace with hash 345077398, now seen corresponding path program 2 times [2021-06-05 03:21:09,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:21:09,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044688775] [2021-06-05 03:21:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:21:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:21:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:21:09,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:21:09,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044688775] [2021-06-05 03:21:09,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044688775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:21:09,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939519748] [2021-06-05 03:21:09,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:21:09,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 03:21:09,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:21:09,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:21:09,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:21:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:21:09,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939519748] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:21:09,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:21:09,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-06-05 03:21:09,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777421282] [2021-06-05 03:21:09,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 03:21:09,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:21:09,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 03:21:09,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-06-05 03:21:09,704 INFO L87 Difference]: Start difference. First operand 143886 states and 677970 transitions. Second operand has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:21:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:21:20,802 INFO L93 Difference]: Finished difference Result 956683 states and 4197476 transitions. [2021-06-05 03:21:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 03:21:20,803 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:21:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:21:26,269 INFO L225 Difference]: With dead ends: 956683 [2021-06-05 03:21:26,269 INFO L226 Difference]: Without dead ends: 951703 [2021-06-05 03:21:26,270 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 882.5ms TimeCoverageRelationStatistics Valid=1210, Invalid=3902, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 03:21:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951703 states. [2021-06-05 03:21:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951703 to 150683. [2021-06-05 03:21:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150683 states, 150598 states have (on average 4.712326856930371) internal successors, (709667), 150682 states have internal predecessors, (709667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:21:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150683 states to 150683 states and 709667 transitions. [2021-06-05 03:21:50,731 INFO L78 Accepts]: Start accepts. Automaton has 150683 states and 709667 transitions. Word has length 15 [2021-06-05 03:21:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:21:50,732 INFO L482 AbstractCegarLoop]: Abstraction has 150683 states and 709667 transitions. [2021-06-05 03:21:50,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:21:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 150683 states and 709667 transitions. [2021-06-05 03:21:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:21:50,733 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:21:50,733 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:21:50,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-06-05 03:21:50,933 INFO L430 AbstractCegarLoop]: === Iteration 13 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:21:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:21:50,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1881941464, now seen corresponding path program 3 times [2021-06-05 03:21:50,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:21:50,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155666050] [2021-06-05 03:21:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:21:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:21:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:21:50,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:21:50,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155666050] [2021-06-05 03:21:50,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155666050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:21:50,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273156956] [2021-06-05 03:21:50,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:21:51,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 03:21:51,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:21:51,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:21:51,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:21:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:21:51,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273156956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:21:51,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:21:51,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-06-05 03:21:51,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543267054] [2021-06-05 03:21:51,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 03:21:51,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:21:51,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 03:21:51,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 03:21:51,123 INFO L87 Difference]: Start difference. First operand 150683 states and 709667 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:21:52,111 WARN L205 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-06-05 03:22:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:22:04,406 INFO L93 Difference]: Finished difference Result 1095593 states and 4819723 transitions. [2021-06-05 03:22:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 03:22:04,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:22:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:22:11,351 INFO L225 Difference]: With dead ends: 1095593 [2021-06-05 03:22:11,351 INFO L226 Difference]: Without dead ends: 1093147 [2021-06-05 03:22:11,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 1407.4ms TimeCoverageRelationStatistics Valid=972, Invalid=2934, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 03:22:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093147 states. [2021-06-05 03:22:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093147 to 150687. [2021-06-05 03:22:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150687 states, 150602 states have (on average 4.712248177315042) internal successors, (709674), 150686 states have internal predecessors, (709674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:22:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150687 states to 150687 states and 709674 transitions. [2021-06-05 03:22:39,823 INFO L78 Accepts]: Start accepts. Automaton has 150687 states and 709674 transitions. Word has length 15 [2021-06-05 03:22:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:22:39,823 INFO L482 AbstractCegarLoop]: Abstraction has 150687 states and 709674 transitions. [2021-06-05 03:22:39,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:22:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 150687 states and 709674 transitions. [2021-06-05 03:22:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:22:39,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:22:39,825 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:22:40,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-05 03:22:40,025 INFO L430 AbstractCegarLoop]: === Iteration 14 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:22:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:22:40,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1800542408, now seen corresponding path program 4 times [2021-06-05 03:22:40,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:22:40,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977172192] [2021-06-05 03:22:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:22:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:22:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:22:40,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:22:40,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977172192] [2021-06-05 03:22:40,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977172192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:22:40,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638313817] [2021-06-05 03:22:40,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:22:40,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 03:22:40,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:22:40,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:22:40,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:22:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:22:40,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638313817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:22:40,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:22:40,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-06-05 03:22:40,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184348196] [2021-06-05 03:22:40,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 03:22:40,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:22:40,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 03:22:40,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-06-05 03:22:40,235 INFO L87 Difference]: Start difference. First operand 150687 states and 709674 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:22:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:22:50,789 INFO L93 Difference]: Finished difference Result 946809 states and 4218355 transitions. [2021-06-05 03:22:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 03:22:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:22:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:22:56,306 INFO L225 Difference]: With dead ends: 946809 [2021-06-05 03:22:56,306 INFO L226 Difference]: Without dead ends: 945643 [2021-06-05 03:22:56,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 500.1ms TimeCoverageRelationStatistics Valid=670, Invalid=1780, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 03:23:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945643 states. [2021-06-05 03:23:19,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945643 to 149005. [2021-06-05 03:23:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149005 states, 148920 states have (on average 4.707514101531023) internal successors, (701043), 149004 states have internal predecessors, (701043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:23:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149005 states to 149005 states and 701043 transitions. [2021-06-05 03:23:22,113 INFO L78 Accepts]: Start accepts. Automaton has 149005 states and 701043 transitions. Word has length 15 [2021-06-05 03:23:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:23:22,117 INFO L482 AbstractCegarLoop]: Abstraction has 149005 states and 701043 transitions. [2021-06-05 03:23:22,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:23:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 149005 states and 701043 transitions. [2021-06-05 03:23:22,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:23:22,119 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:23:22,119 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:23:22,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-06-05 03:23:22,333 INFO L430 AbstractCegarLoop]: === Iteration 15 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:23:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:23:22,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1519911188, now seen corresponding path program 5 times [2021-06-05 03:23:22,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:23:22,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969119371] [2021-06-05 03:23:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:23:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:23:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:23:22,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:23:22,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969119371] [2021-06-05 03:23:22,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969119371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:23:22,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125860692] [2021-06-05 03:23:22,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:23:22,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 03:23:22,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:23:22,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 03:23:22,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:23:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:23:22,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125860692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:23:22,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:23:22,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-06-05 03:23:22,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307106253] [2021-06-05 03:23:22,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 03:23:22,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:23:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 03:23:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 03:23:22,574 INFO L87 Difference]: Start difference. First operand 149005 states and 701043 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:23:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:23:39,585 INFO L93 Difference]: Finished difference Result 1258082 states and 5489767 transitions. [2021-06-05 03:23:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 03:23:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:23:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:23:47,009 INFO L225 Difference]: With dead ends: 1258082 [2021-06-05 03:23:47,009 INFO L226 Difference]: Without dead ends: 1256146 [2021-06-05 03:23:47,009 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1059.9ms TimeCoverageRelationStatistics Valid=1503, Invalid=4503, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 03:23:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256146 states. [2021-06-05 03:24:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256146 to 148945. [2021-06-05 03:24:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148945 states, 148860 states have (on average 4.707732097272605) internal successors, (700793), 148944 states have internal predecessors, (700793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:24:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148945 states to 148945 states and 700793 transitions. [2021-06-05 03:24:23,194 INFO L78 Accepts]: Start accepts. Automaton has 148945 states and 700793 transitions. Word has length 15 [2021-06-05 03:24:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:24:23,194 INFO L482 AbstractCegarLoop]: Abstraction has 148945 states and 700793 transitions. [2021-06-05 03:24:23,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:24:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 148945 states and 700793 transitions. [2021-06-05 03:24:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 03:24:23,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:24:23,195 INFO L521 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:24:23,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-05 03:24:23,395 INFO L430 AbstractCegarLoop]: === Iteration 16 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:24:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:24:23,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1927751914, now seen corresponding path program 6 times [2021-06-05 03:24:23,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:24:23,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603996463] [2021-06-05 03:24:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:24:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:24:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 03:24:23,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:24:23,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603996463] [2021-06-05 03:24:23,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603996463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:24:23,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434002848] [2021-06-05 03:24:23,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:24:23,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 03:24:23,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 03:24:23,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:24:23,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:24:24,261 WARN L205 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-06-05 03:24:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 03:24:24,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434002848] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:24:24,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:24:24,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-06-05 03:24:24,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017584862] [2021-06-05 03:24:24,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 03:24:24,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:24:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 03:24:24,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-06-05 03:24:24,317 INFO L87 Difference]: Start difference. First operand 148945 states and 700793 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:24:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 03:24:32,710 INFO L93 Difference]: Finished difference Result 778536 states and 3413323 transitions. [2021-06-05 03:24:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 03:24:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 03:24:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 03:24:36,910 INFO L225 Difference]: With dead ends: 778536 [2021-06-05 03:24:36,911 INFO L226 Difference]: Without dead ends: 777604 [2021-06-05 03:24:36,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1590.3ms TimeCoverageRelationStatistics Valid=961, Invalid=3199, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 03:24:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777604 states. [2021-06-05 03:24:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777604 to 147166. [2021-06-05 03:24:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147166 states, 147081 states have (on average 4.706223101556286) internal successors, (692196), 147165 states have internal predecessors, (692196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:24:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147166 states to 147166 states and 692196 transitions. [2021-06-05 03:24:58,142 INFO L78 Accepts]: Start accepts. Automaton has 147166 states and 692196 transitions. Word has length 15 [2021-06-05 03:24:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 03:24:58,142 INFO L482 AbstractCegarLoop]: Abstraction has 147166 states and 692196 transitions. [2021-06-05 03:24:58,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 03:24:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 147166 states and 692196 transitions. [2021-06-05 03:24:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 03:24:58,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 03:24:58,144 INFO L521 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 03:24:58,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:24:58,367 INFO L430 AbstractCegarLoop]: === Iteration 17 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 03:24:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 03:24:58,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1868847926, now seen corresponding path program 1 times [2021-06-05 03:24:58,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 03:24:58,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284108648] [2021-06-05 03:24:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 03:24:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:24:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-05 03:24:58,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 03:24:58,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284108648] [2021-06-05 03:24:58,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284108648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:24:58,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579140890] [2021-06-05 03:24:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 03:24:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 03:24:58,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 03:24:58,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 03:24:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 03:24:58,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579140890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 03:24:58,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 03:24:58,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2021-06-05 03:24:58,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038841836] [2021-06-05 03:24:58,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 03:24:58,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 03:24:58,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 03:24:58,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 03:24:58,578 INFO L87 Difference]: Start difference. First operand 147166 states and 692196 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 03:24:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 03:24:59,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-05 03:24:59,669 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 03:24:59,671 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 5 thread instances [2021-06-05 03:24:59,674 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 03:24:59,674 INFO L202 PluginConnector]: Adding new model pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 03:24:59 BasicIcfg [2021-06-05 03:24:59,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 03:24:59,675 INFO L168 Benchmark]: Toolchain (without parser) took 590453.89 ms. Allocated memory was 343.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 323.6 MB in the beginning and 8.1 GB in the end (delta: -7.7 GB). Peak memory consumption was 7.9 GB. Max. memory is 16.0 GB. [2021-06-05 03:24:59,675 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 343.9 MB. Free memory was 324.6 MB in the beginning and 324.5 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 03:24:59,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.86 ms. Allocated memory is still 343.9 MB. Free memory was 323.5 MB in the beginning and 322.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:24:59,675 INFO L168 Benchmark]: Boogie Preprocessor took 12.43 ms. Allocated memory is still 343.9 MB. Free memory was 322.0 MB in the beginning and 321.1 MB in the end (delta: 890.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 03:24:59,675 INFO L168 Benchmark]: RCFGBuilder took 192.11 ms. Allocated memory is still 343.9 MB. Free memory was 321.1 MB in the beginning and 312.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-05 03:24:59,675 INFO L168 Benchmark]: TraceAbstraction took 590223.09 ms. Allocated memory was 343.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 311.6 MB in the beginning and 8.1 GB in the end (delta: -7.7 GB). Peak memory consumption was 7.9 GB. Max. memory is 16.0 GB. [2021-06-05 03:24:59,676 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 0.16 ms. Allocated memory is still 343.9 MB. Free memory was 324.6 MB in the beginning and 324.5 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.86 ms. Allocated memory is still 343.9 MB. Free memory was 323.5 MB in the beginning and 322.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.43 ms. Allocated memory is still 343.9 MB. Free memory was 322.0 MB in the beginning and 321.1 MB in the end (delta: 890.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 192.11 ms. Allocated memory is still 343.9 MB. Free memory was 321.1 MB in the beginning and 312.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 590223.09 ms. Allocated memory was 343.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 311.6 MB in the beginning and 8.1 GB in the end (delta: -7.7 GB). Peak memory consumption was 7.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (147166states) and FLOYD_HOARE automaton (currently 17 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (74534 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (147166states) and FLOYD_HOARE automaton (currently 17 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (74534 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 152.2ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 6.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.3ms SsaConstructionTime, 16.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1454.7ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 3.0ms, AutomataDifference: 661.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 227 SDslu, 117 SDs, 0 SdLazy, 317 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 219.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 344.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=261occurred in iteration=1, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 94.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 355 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.0ms SsaConstructionTime, 18.1ms SatisfiabilityAnalysisTime, 343.0ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 3 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 32 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8973.8ms, OverallIterations: 7, TraceHistogramMax: 4, EmptinessCheckTime: 11.3ms, AutomataDifference: 5541.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 79.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 243 SDtfs, 2357 SDslu, 1410 SDs, 0 SdLazy, 3656 SolverSat, 333 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1905.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4078 ImplicationChecksByTransitivity, 2889.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2356occurred in iteration=3, InterpolantAutomatonStates: 205, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 889.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 38039 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 56.3ms SatisfiabilityAnalysisTime, 1087.5ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 584 SizeOfPredicates, 23 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 7/20 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33447.0ms, OverallIterations: 11, TraceHistogramMax: 5, EmptinessCheckTime: 31.6ms, AutomataDifference: 15822.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 607.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 603 SDtfs, 5005 SDslu, 3396 SDs, 0 SdLazy, 9025 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3966.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 453 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5393 ImplicationChecksByTransitivity, 5243.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20612occurred in iteration=7, InterpolantAutomatonStates: 309, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13040.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 539009 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 62.8ms SatisfiabilityAnalysisTime, 1738.9ms InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 1272 SizeOfPredicates, 39 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 67/112 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 - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 546042.6ms, OverallIterations: 17, TraceHistogramMax: 4, EmptinessCheckTime: 86.6ms, AutomataDifference: 206544.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14695.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1570 SDtfs, 13009 SDslu, 9337 SDs, 0 SdLazy, 22702 SolverSat, 1229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9521.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 936 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 843 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14260 ImplicationChecksByTransitivity, 11520.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=150687occurred in iteration=13, InterpolantAutomatonStates: 664, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 317451.6ms AutomataMinimizationTime, 16 MinimizatonAttempts, 9663028 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.1ms SsaConstructionTime, 88.5ms SatisfiabilityAnalysisTime, 3329.5ms InterpolantComputationTime, 445 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 412 ConstructedInterpolants, 0 QuantifiedInterpolants, 2244 SizeOfPredicates, 74 NumberOfNonLiveVariables, 406 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 33 InterpolantComputations, 1 PerfectInterpolantSequences, 87/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !SESSION 2021-06-05 03:15:07.328 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.11 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -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/pthread_nondet_loop_bound.bpl Command-line arguments: -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/pthread_nondet_loop_bound.bpl !ENTRY org.eclipse.osgi 4 0 2021-06-05 03:24:59.923 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16682bc9f/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16682bc9f/.metadata/.log.