/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:45:02,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:45:02,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:45:02,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:45:02,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:45:02,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:45:02,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:45:02,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:45:02,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:45:02,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:45:02,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:45:02,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:45:02,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:45:02,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:45:02,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:45:02,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:45:02,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:45:02,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:45:02,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:45:02,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:45:02,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:45:02,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:45:02,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:45:02,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:45:02,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 21:45:02,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 21:45:02,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 21:45:02,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 21:45:02,478 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-PN-NoLbe.epf [2021-08-12 21:45:02,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:45:02,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:45:02,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:45:02,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:45:02,521 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:45:02,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:45:02,521 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:45:02,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:45:02,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:45:02,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:45:02,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:45:02,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:45:02,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:45:02,523 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:45:02,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:45:02,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:45:02,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:45:02,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:45:02,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:45:02,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:45:02,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:45:02,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:45:02,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:45:02,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:45:02,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:45:02,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:45:02,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:45:02,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:45:02,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:45:02,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:45:02,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:45:02,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:45:02,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:45:02,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:45:02,857 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 21:45:02,860 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 21:45:02,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl [2021-08-12 21:45:02,862 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl' [2021-08-12 21:45:02,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:45:02,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 21:45:02,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:45:02,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:45:02,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:45:02,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:45:02,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:45:02,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:45:02,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:45:02,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... [2021-08-12 21:45:02,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:45:02,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:45:02,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:45:02,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:45:02,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:45:03,032 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 21:45:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:45:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:45:03,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-08-12 21:45:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-08-12 21:45:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-08-12 21:45:03,034 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 21:45:03,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:45:03,143 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-12 21:45:03,144 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:45:03 BoogieIcfgContainer [2021-08-12 21:45:03,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:45:03,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:45:03,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:45:03,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:45:03,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:45:02" (1/2) ... [2021-08-12 21:45:03,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad1bb44 and model type fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:45:03, skipping insertion in model container [2021-08-12 21:45:03,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:45:03" (2/2) ... [2021-08-12 21:45:03,152 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_local.bpl [2021-08-12 21:45:03,161 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:45:03,162 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 21:45:03,163 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:45:03,188 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,188 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,189 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,189 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,194 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,201 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:45:03,221 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-12 21:45:03,238 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:45:03,239 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:45:03,239 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:45:03,239 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:45:03,239 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:45:03,239 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:45:03,239 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:45:03,240 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:45:03,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 9 transitions, 23 flow [2021-08-12 21:45:03,262 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-08-12 21:45:03,263 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-12 21:45:03,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 9 transitions, 23 flow [2021-08-12 21:45:03,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 12 places, 9 transitions, 23 flow [2021-08-12 21:45:03,270 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-08-12 21:45:03,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,271 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:03,271 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-08-12 21:45:03,272 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:03,276 INFO L82 PathProgramCache]: Analyzing trace with hash 42154, now seen corresponding path program 1 times [2021-08-12 21:45:03,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:03,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279630114] [2021-08-12 21:45:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:03,344 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:03,348 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:03,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 21:45:03,364 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 21:45:03,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:45:03,365 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 21:45:03,365 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-08-12 21:45:03,370 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,371 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,371 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,371 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,372 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,372 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,373 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,373 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,374 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,375 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,377 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:45:03,378 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-12 21:45:03,380 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:45:03,380 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:45:03,381 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:45:03,381 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:45:03,381 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:45:03,381 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:45:03,381 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:45:03,381 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:45:03,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 15 transitions, 42 flow [2021-08-12 21:45:03,387 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-08-12 21:45:03,387 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-08-12 21:45:03,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 15 transitions, 42 flow [2021-08-12 21:45:03,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2021-08-12 21:45:03,391 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-08-12 21:45:03,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,392 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:03,392 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-08-12 21:45:03,392 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:03,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:03,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1773586, now seen corresponding path program 1 times [2021-08-12 21:45:03,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:03,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526860657] [2021-08-12 21:45:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:03,398 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:03,401 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:03,403 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 21:45:03,403 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 21:45:03,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:45:03,404 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 21:45:03,404 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-08-12 21:45:03,447 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,448 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,448 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,448 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,449 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,449 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,449 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,449 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,450 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,450 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,450 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,450 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,451 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,452 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,453 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,454 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:45:03,454 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-12 21:45:03,456 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:45:03,456 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:45:03,456 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:45:03,456 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:45:03,456 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:45:03,456 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:45:03,456 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:45:03,456 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:45:03,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 63 flow [2021-08-12 21:45:03,467 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-08-12 21:45:03,467 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-08-12 21:45:03,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 63 flow [2021-08-12 21:45:03,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 63 flow [2021-08-12 21:45:03,472 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-08-12 21:45:03,472 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,472 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:03,472 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-12 21:45:03,472 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash 75168682, now seen corresponding path program 1 times [2021-08-12 21:45:03,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:03,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749260926] [2021-08-12 21:45:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:03,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:03,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:03,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:03,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:03,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:03,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:45:03,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:03,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749260926] [2021-08-12 21:45:03,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749260926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:03,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:03,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:03,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455047769] [2021-08-12 21:45:03,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:03,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:03,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:03,614 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 21 [2021-08-12 21:45:03,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:03,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:03,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 21 [2021-08-12 21:45:03,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:45:03,911 INFO L129 PetriNetUnfolder]: 291/669 cut-off events. [2021-08-12 21:45:03,912 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:03,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 669 events. 291/669 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4286 event pairs, 91 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 1230. Up to 175 conditions per place. [2021-08-12 21:45:03,927 INFO L132 encePairwiseOnDemand]: 10/21 looper letters, 28 selfloop transitions, 14 changer transitions 0/49 dead transitions. [2021-08-12 21:45:03,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 203 flow [2021-08-12 21:45:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:45:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:45:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2021-08-12 21:45:03,940 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2021-08-12 21:45:03,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2021-08-12 21:45:03,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2021-08-12 21:45:03,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:45:03,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2021-08-12 21:45:03,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:03,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:03,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:03,952 INFO L348 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2021-08-12 21:45:03,953 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 49 transitions, 203 flow [2021-08-12 21:45:03,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:03,953 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:03,953 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-12 21:45:03,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 21:45:03,953 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:03,954 INFO L82 PathProgramCache]: Analyzing trace with hash 75175629, now seen corresponding path program 1 times [2021-08-12 21:45:03,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:03,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152124457] [2021-08-12 21:45:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:03,968 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:03,972 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:03,976 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 21:45:03,977 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 21:45:03,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 21:45:03,978 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 21:45:03,978 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-08-12 21:45:03,985 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,986 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,986 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,986 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,987 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,988 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,988 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,988 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,989 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,989 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,990 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,990 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,990 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,990 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,991 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,991 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,992 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,993 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,994 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,995 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:03,996 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:45:03,996 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-12 21:45:03,998 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:45:03,998 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:45:03,998 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:45:03,998 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:45:03,998 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:45:03,998 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:45:03,998 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:45:03,998 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:45:04,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 86 flow [2021-08-12 21:45:04,003 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-08-12 21:45:04,004 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:04,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-08-12 21:45:04,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 27 transitions, 86 flow [2021-08-12 21:45:04,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 86 flow [2021-08-12 21:45:04,006 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-08-12 21:45:04,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:04,007 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:04,007 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-12 21:45:04,007 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:04,008 INFO L82 PathProgramCache]: Analyzing trace with hash 101078907, now seen corresponding path program 1 times [2021-08-12 21:45:04,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:04,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407311566] [2021-08-12 21:45:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:04,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:04,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:04,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:04,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:04,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:04,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:45:04,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:04,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407311566] [2021-08-12 21:45:04,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407311566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:04,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:04,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:04,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996515500] [2021-08-12 21:45:04,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:04,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:04,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:04,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:04,073 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2021-08-12 21:45:04,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:04,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:04,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2021-08-12 21:45:04,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:45:04,725 INFO L129 PetriNetUnfolder]: 2852/5054 cut-off events. [2021-08-12 21:45:04,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:04,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 5054 events. 2852/5054 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 37317 event pairs, 882 based on Foata normal form. 0/4171 useless extension candidates. Maximal degree in co-relation 9540. Up to 1413 conditions per place. [2021-08-12 21:45:04,791 INFO L132 encePairwiseOnDemand]: 13/27 looper letters, 38 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2021-08-12 21:45:04,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 65 transitions, 274 flow [2021-08-12 21:45:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:45:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:45:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2021-08-12 21:45:04,801 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8074074074074075 [2021-08-12 21:45:04,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 109 transitions. [2021-08-12 21:45:04,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 109 transitions. [2021-08-12 21:45:04,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:45:04,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 109 transitions. [2021-08-12 21:45:04,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:04,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:04,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:04,806 INFO L348 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2021-08-12 21:45:04,806 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 65 transitions, 274 flow [2021-08-12 21:45:04,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:04,806 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:04,806 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-12 21:45:04,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 21:45:04,807 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:04,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1161010669, now seen corresponding path program 1 times [2021-08-12 21:45:04,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:04,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827774086] [2021-08-12 21:45:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:04,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:04,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:04,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:04,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:04,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:04,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-12 21:45:04,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:04,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827774086] [2021-08-12 21:45:04,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827774086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:04,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:04,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:04,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222413763] [2021-08-12 21:45:04,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:04,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:04,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:04,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:04,875 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2021-08-12 21:45:04,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 65 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:04,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:04,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2021-08-12 21:45:04,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:45:05,979 INFO L129 PetriNetUnfolder]: 5089/9213 cut-off events. [2021-08-12 21:45:05,980 INFO L130 PetriNetUnfolder]: For 25/61 co-relation queries the response was YES. [2021-08-12 21:45:06,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25585 conditions, 9213 events. 5089/9213 cut-off events. For 25/61 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 76906 event pairs, 1178 based on Foata normal form. 1/7703 useless extension candidates. Maximal degree in co-relation 25215. Up to 2374 conditions per place. [2021-08-12 21:45:06,092 INFO L132 encePairwiseOnDemand]: 13/27 looper letters, 95 selfloop transitions, 50 changer transitions 0/154 dead transitions. [2021-08-12 21:45:06,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 154 transitions, 923 flow [2021-08-12 21:45:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:45:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:45:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2021-08-12 21:45:06,097 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7851851851851852 [2021-08-12 21:45:06,098 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2021-08-12 21:45:06,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2021-08-12 21:45:06,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:45:06,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2021-08-12 21:45:06,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:06,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:06,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:06,102 INFO L348 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2021-08-12 21:45:06,102 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 154 transitions, 923 flow [2021-08-12 21:45:06,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:06,102 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:06,102 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-12 21:45:06,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 21:45:06,103 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1160997765, now seen corresponding path program 1 times [2021-08-12 21:45:06,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:06,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17184864] [2021-08-12 21:45:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:06,111 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:06,118 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:06,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 21:45:06,122 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 21:45:06,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 21:45:06,123 WARN L235 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 21:45:06,123 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-08-12 21:45:06,128 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,129 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,130 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,130 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,130 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,131 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,131 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,131 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,131 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,131 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,135 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,135 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,135 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,136 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,136 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,137 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,138 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,139 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,139 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:06,140 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:45:06,140 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-12 21:45:06,141 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:45:06,141 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:45:06,141 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:45:06,141 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:45:06,141 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:45:06,141 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:45:06,141 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:45:06,142 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:45:06,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 33 transitions, 111 flow [2021-08-12 21:45:06,147 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-08-12 21:45:06,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:06,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-08-12 21:45:06,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 33 transitions, 111 flow [2021-08-12 21:45:06,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 33 transitions, 111 flow [2021-08-12 21:45:06,153 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-08-12 21:45:06,153 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:06,153 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:06,154 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-12 21:45:06,155 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash 132714962, now seen corresponding path program 1 times [2021-08-12 21:45:06,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:06,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241253884] [2021-08-12 21:45:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:06,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:06,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:06,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:06,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:06,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:45:06,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:06,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241253884] [2021-08-12 21:45:06,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241253884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:06,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:06,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:06,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185741007] [2021-08-12 21:45:06,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:06,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:06,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:06,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:06,208 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2021-08-12 21:45:06,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:06,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:06,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2021-08-12 21:45:06,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:45:09,928 INFO L129 PetriNetUnfolder]: 22065/34223 cut-off events. [2021-08-12 21:45:09,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:10,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65388 conditions, 34223 events. 22065/34223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 270231 event pairs, 6846 based on Foata normal form. 0/28585 useless extension candidates. Maximal degree in co-relation 65342. Up to 10043 conditions per place. [2021-08-12 21:45:10,346 INFO L132 encePairwiseOnDemand]: 16/33 looper letters, 48 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2021-08-12 21:45:10,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 347 flow [2021-08-12 21:45:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:45:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:45:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-08-12 21:45:10,348 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-08-12 21:45:10,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2021-08-12 21:45:10,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2021-08-12 21:45:10,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:45:10,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2021-08-12 21:45:10,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:10,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:10,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:10,350 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2021-08-12 21:45:10,350 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 81 transitions, 347 flow [2021-08-12 21:45:10,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:10,350 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:10,350 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-12 21:45:10,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 21:45:10,351 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash -179995026, now seen corresponding path program 1 times [2021-08-12 21:45:10,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:10,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073644755] [2021-08-12 21:45:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:10,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:10,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:10,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:10,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:10,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:10,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-12 21:45:10,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:10,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073644755] [2021-08-12 21:45:10,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073644755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:10,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:10,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:10,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677949077] [2021-08-12 21:45:10,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:10,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:10,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:10,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:10,381 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2021-08-12 21:45:10,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 81 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:10,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:10,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2021-08-12 21:45:10,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:45:18,043 INFO L129 PetriNetUnfolder]: 41526/65262 cut-off events. [2021-08-12 21:45:18,044 INFO L130 PetriNetUnfolder]: For 31/209 co-relation queries the response was YES. [2021-08-12 21:45:18,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183515 conditions, 65262 events. 41526/65262 cut-off events. For 31/209 co-relation queries the response was YES. Maximal size of possible extension queue 4154. Compared 571070 event pairs, 9757 based on Foata normal form. 9/55249 useless extension candidates. Maximal degree in co-relation 183441. Up to 17974 conditions per place. [2021-08-12 21:45:19,190 INFO L132 encePairwiseOnDemand]: 16/33 looper letters, 123 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2021-08-12 21:45:19,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 196 transitions, 1180 flow [2021-08-12 21:45:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:45:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:45:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2021-08-12 21:45:19,192 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.793939393939394 [2021-08-12 21:45:19,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2021-08-12 21:45:19,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2021-08-12 21:45:19,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:45:19,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2021-08-12 21:45:19,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:19,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:19,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:19,195 INFO L348 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2021-08-12 21:45:19,195 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 196 transitions, 1180 flow [2021-08-12 21:45:19,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:19,195 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:19,195 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:45:19,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 21:45:19,195 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:19,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1284170360, now seen corresponding path program 1 times [2021-08-12 21:45:19,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:19,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725294927] [2021-08-12 21:45:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:19,209 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 21:45:19,213 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 21:45:19,216 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 21:45:19,216 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 21:45:19,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 21:45:19,216 WARN L235 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 21:45:19,216 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-08-12 21:45:19,224 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,224 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,224 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,224 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,225 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,226 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,227 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,227 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,227 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,227 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,228 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,229 WARN L313 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,230 WARN L313 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,231 WARN L313 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,232 WARN L313 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,235 WARN L313 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,236 WARN L313 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:45:19,237 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:45:19,237 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-12 21:45:19,239 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:45:19,239 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:45:19,239 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:45:19,239 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:45:19,239 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:45:19,239 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:45:19,239 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:45:19,239 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:45:19,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 138 flow [2021-08-12 21:45:19,247 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-08-12 21:45:19,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:19,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-08-12 21:45:19,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 39 transitions, 138 flow [2021-08-12 21:45:19,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 138 flow [2021-08-12 21:45:19,250 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-08-12 21:45:19,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:19,250 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:19,250 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-08-12 21:45:19,252 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash 170106637, now seen corresponding path program 1 times [2021-08-12 21:45:19,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:19,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762374413] [2021-08-12 21:45:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:19,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:19,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:19,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:19,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:19,297 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:19,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:45:19,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:19,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762374413] [2021-08-12 21:45:19,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762374413] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:19,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:19,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291930683] [2021-08-12 21:45:19,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:19,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:19,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:19,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:19,302 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2021-08-12 21:45:19,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:19,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:19,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2021-08-12 21:45:19,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:45:55,385 INFO L129 PetriNetUnfolder]: 151182/216132 cut-off events. [2021-08-12 21:45:55,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:45:56,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 415569 conditions, 216132 events. 151182/216132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10216. Compared 1786592 event pairs, 46742 based on Foata normal form. 0/182063 useless extension candidates. Maximal degree in co-relation 415512. Up to 64869 conditions per place. [2021-08-12 21:45:57,932 INFO L132 encePairwiseOnDemand]: 19/39 looper letters, 58 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2021-08-12 21:45:57,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 422 flow [2021-08-12 21:45:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:45:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:45:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2021-08-12 21:45:57,934 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8256410256410256 [2021-08-12 21:45:57,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2021-08-12 21:45:57,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2021-08-12 21:45:57,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:45:57,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2021-08-12 21:45:57,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:57,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:57,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:57,936 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2021-08-12 21:45:57,936 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 97 transitions, 422 flow [2021-08-12 21:45:57,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:57,936 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:45:57,936 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-12 21:45:57,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-12 21:45:57,937 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:45:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:45:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash 978536248, now seen corresponding path program 1 times [2021-08-12 21:45:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:45:57,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185414036] [2021-08-12 21:45:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:45:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:45:57,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:57,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:57,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:45:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:45:57,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:45:57,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:45:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-12 21:45:57,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:45:57,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185414036] [2021-08-12 21:45:57,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185414036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:45:57,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:45:57,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:45:57,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544521014] [2021-08-12 21:45:57,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:45:57,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:45:57,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:45:57,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:45:57,988 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2021-08-12 21:45:57,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 97 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:45:57,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:45:57,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2021-08-12 21:45:57,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:48:12,811 INFO L129 PetriNetUnfolder]: 290971/418422 cut-off events. [2021-08-12 21:48:12,811 INFO L130 PetriNetUnfolder]: For 84/1152 co-relation queries the response was YES. [2021-08-12 21:48:15,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1190342 conditions, 418422 events. 290971/418422 cut-off events. For 84/1152 co-relation queries the response was YES. Maximal size of possible extension queue 20147. Compared 3736153 event pairs, 64014 based on Foata normal form. 15/356949 useless extension candidates. Maximal degree in co-relation 1189764. Up to 119346 conditions per place. [2021-08-12 21:48:18,979 INFO L132 encePairwiseOnDemand]: 19/39 looper letters, 151 selfloop transitions, 74 changer transitions 0/238 dead transitions. [2021-08-12 21:48:18,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 238 transitions, 1439 flow [2021-08-12 21:48:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:48:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 21:48:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2021-08-12 21:48:18,988 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-12 21:48:18,989 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 156 transitions. [2021-08-12 21:48:18,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 156 transitions. [2021-08-12 21:48:18,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:48:18,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 156 transitions. [2021-08-12 21:48:19,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:48:19,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:48:19,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:48:19,012 INFO L348 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2021-08-12 21:48:19,012 INFO L482 AbstractCegarLoop]: Abstraction has has 60 places, 238 transitions, 1439 flow [2021-08-12 21:48:19,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:48:19,012 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:48:19,013 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:48:19,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 21:48:19,013 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:48:19,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:48:19,014 INFO L82 PathProgramCache]: Analyzing trace with hash 270378104, now seen corresponding path program 1 times [2021-08-12 21:48:19,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:48:19,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769432781] [2021-08-12 21:48:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:48:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:48:19,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:48:19,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:48:19,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:48:19,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:48:19,080 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-12 21:48:19,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-12 21:48:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-12 21:48:19,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:48:19,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769432781] [2021-08-12 21:48:19,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769432781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:48:19,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:48:19,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:48:19,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71482304] [2021-08-12 21:48:19,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:48:19,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:48:19,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:48:19,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:48:19,087 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2021-08-12 21:48:19,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 238 transitions, 1439 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 21:48:19,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:48:19,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2021-08-12 21:48:19,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-12 21:51:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 21:51:08,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 21:51:08,600 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-12 21:51:08,602 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 6 thread instances [2021-08-12 21:51:08,604 WARN L188 ceAbstractionStarter]: Timeout [2021-08-12 21:51:08,605 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 09:51:08 BasicIcfg [2021-08-12 21:51:08,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 21:51:08,607 INFO L168 Benchmark]: Toolchain (without parser) took 365704.69 ms. Allocated memory was 221.2 MB in the beginning and 7.2 GB in the end (delta: 6.9 GB). Free memory was 201.3 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 7.3 GB. Max. memory is 8.0 GB. [2021-08-12 21:51:08,607 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.63 ms. Allocated memory is still 221.2 MB. Free memory was 202.4 MB in the beginning and 202.1 MB in the end (delta: 223.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:51:08,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.85 ms. Allocated memory is still 221.2 MB. Free memory was 201.3 MB in the beginning and 199.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:51:08,608 INFO L168 Benchmark]: Boogie Preprocessor took 17.19 ms. Allocated memory is still 221.2 MB. Free memory was 199.8 MB in the beginning and 198.8 MB in the end (delta: 995.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:51:08,608 INFO L168 Benchmark]: RCFGBuilder took 187.13 ms. Allocated memory is still 221.2 MB. Free memory was 198.8 MB in the beginning and 190.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-08-12 21:51:08,608 INFO L168 Benchmark]: TraceAbstraction took 365458.01 ms. Allocated memory was 221.2 MB in the beginning and 7.2 GB in the end (delta: 6.9 GB). Free memory was 190.4 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 7.3 GB. Max. memory is 8.0 GB. [2021-08-12 21:51:08,610 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 0.63 ms. Allocated memory is still 221.2 MB. Free memory was 202.4 MB in the beginning and 202.1 MB in the end (delta: 223.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.85 ms. Allocated memory is still 221.2 MB. Free memory was 201.3 MB in the beginning and 199.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.19 ms. Allocated memory is still 221.2 MB. Free memory was 199.8 MB in the beginning and 198.8 MB in the end (delta: 995.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 187.13 ms. Allocated memory is still 221.2 MB. Free memory was 198.8 MB in the beginning and 190.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 365458.01 ms. Allocated memory was 221.2 MB in the beginning and 7.2 GB in the end (delta: 6.9 GB). Free memory was 190.4 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 7.3 GB. Max. memory is 8.0 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 CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 13/39 universal loopers) in iteration 3,while PetriNetUnfolder was constructing finite prefix that currently has 1491969 conditions, 384446 events (286691/384445 cut-off events. For 710/3701 co-relation queries the response was YES. Maximal size of possible extension queue 37706. Compared 3234167 event pairs, 47513 based on Foata normal form. 105/368871 useless extension candidates. Maximal degree in co-relation 1484308. Up to 123363 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 130.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: 2.9ms SsaConstructionTime, 11.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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, 22 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 24.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.1ms, 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: 0.6ms SsaConstructionTime, 1.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 3 thread instances CFG has 5 procedures, 28 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 522.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 343.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 20 SDslu, 9 SDs, 0 SdLazy, 34 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=1, InterpolantAutomatonStates: 5, 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: 2.1ms SsaConstructionTime, 11.5ms SatisfiabilityAnalysisTime, 91.5ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 4 thread instances CFG has 6 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2125.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1961.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 55 SDslu, 26 SDs, 0 SdLazy, 90 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 113.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=923occurred in iteration=2, InterpolantAutomatonStates: 10, 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: 1.8ms SsaConstructionTime, 18.3ms SatisfiabilityAnalysisTime, 101.4ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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, 40 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 13075.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 12957.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 68 SDslu, 34 SDs, 0 SdLazy, 112 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1180occurred in iteration=2, InterpolantAutomatonStates: 10, 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: 1.1ms SsaConstructionTime, 11.2ms SatisfiabilityAnalysisTime, 65.1ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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 6 thread instances CFG has 8 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 349361.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 349172.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 123 SDslu, 62 SDs, 0 SdLazy, 201 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 200.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1439occurred in iteration=2, InterpolantAutomatonStates: 10, 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: 2.3ms SsaConstructionTime, 17.3ms SatisfiabilityAnalysisTime, 130.0ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown