/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:24:48,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:24:48,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:24:48,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:24:48,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:24:48,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:24:48,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:24:48,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:24:48,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:24:48,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:24:48,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:24:48,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:24:48,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:24:48,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:24:48,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:24:48,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:24:48,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:24:48,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:24:48,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:24:48,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:24:48,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:24:48,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:24:48,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:24:48,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:24:48,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 23:24:48,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:24:48,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:24:48,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:24:48,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:24:48,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:24:48,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:24:48,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:24:48,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:24:48,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:24:48,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:24:48,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:24:48,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 23:24:48,812 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:24:48,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:24:48,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:24:48,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:24:48,814 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:24:48,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:24:48,814 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:24:48,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:24:48,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:24:48,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:24:48,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:24:48,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:24:48,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:24:48,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:24:48,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:24:48,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:24:48,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:24:48,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:24:48,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:24:48,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:24:48,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:24:48,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:24:48,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:24:48,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:24:48,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:24:48,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:24:48,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:24:48,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 23:24:48,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:24:48,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:24:49,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:24:49,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:24:49,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:24:49,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:24:49,090 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:24:49,091 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2019-12-18 23:24:49,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c9663e2/970fcd1d201e41f897e794060901bf2e/FLAGd90c8d62a [2019-12-18 23:24:49,654 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:24:49,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2019-12-18 23:24:49,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c9663e2/970fcd1d201e41f897e794060901bf2e/FLAGd90c8d62a [2019-12-18 23:24:49,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c9663e2/970fcd1d201e41f897e794060901bf2e [2019-12-18 23:24:49,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:24:49,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:24:49,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:24:49,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:24:49,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:24:49,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:24:49" (1/1) ... [2019-12-18 23:24:49,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e6be02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:49, skipping insertion in model container [2019-12-18 23:24:49,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:24:49" (1/1) ... [2019-12-18 23:24:49,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:24:50,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:24:50,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:24:50,528 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:24:50,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:24:50,656 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:24:50,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50 WrapperNode [2019-12-18 23:24:50,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:24:50,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:24:50,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:24:50,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:24:50,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:24:50,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:24:50,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:24:50,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:24:50,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (1/1) ... [2019-12-18 23:24:50,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:24:50,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:24:50,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:24:50,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:24:50,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (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 [2019-12-18 23:24:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-12-18 23:24:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 23:24:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:24:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-18 23:24:50,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-18 23:24:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:24:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:24:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:24:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:24:50,805 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:24:51,192 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:24:51,193 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-18 23:24:51,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:24:51 BoogieIcfgContainer [2019-12-18 23:24:51,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:24:51,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:24:51,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:24:51,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:24:51,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:24:49" (1/3) ... [2019-12-18 23:24:51,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610a8238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:24:51, skipping insertion in model container [2019-12-18 23:24:51,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:24:50" (2/3) ... [2019-12-18 23:24:51,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610a8238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:24:51, skipping insertion in model container [2019-12-18 23:24:51,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:24:51" (3/3) ... [2019-12-18 23:24:51,203 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2019-12-18 23:24:51,212 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:24:51,213 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:24:51,219 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:24:51,220 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:24:51,240 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,241 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,241 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,242 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,242 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,243 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,243 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,246 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,247 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,247 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,247 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,248 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:51,267 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:51,285 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:51,285 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:51,285 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:51,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:51,286 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:51,286 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:51,286 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:51,286 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:51,299 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions [2019-12-18 23:24:51,301 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 23:24:51,353 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 23:24:51,354 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:51,360 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 10/92 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-18 23:24:51,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 23:24:51,388 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 23:24:51,388 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:51,389 INFO L76 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs. 10/92 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2019-12-18 23:24:51,391 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2019-12-18 23:24:51,392 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:52,823 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:52,947 INFO L206 etLargeBlockEncoding]: Checked pairs total: 289 [2019-12-18 23:24:52,948 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 23:24:52,952 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 14 transitions [2019-12-18 23:24:52,961 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2019-12-18 23:24:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-18 23:24:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:52,972 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:52,972 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:52,973 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash 7975439, now seen corresponding path program 1 times [2019-12-18 23:24:52,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:52,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609454345] [2019-12-18 23:24:52,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:53,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609454345] [2019-12-18 23:24:53,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:53,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:53,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913633759] [2019-12-18 23:24:53,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:53,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:53,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:53,256 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-12-18 23:24:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:53,306 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2019-12-18 23:24:53,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:53,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:53,322 INFO L225 Difference]: With dead ends: 33 [2019-12-18 23:24:53,322 INFO L226 Difference]: Without dead ends: 26 [2019-12-18 23:24:53,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-18 23:24:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-18 23:24:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-18 23:24:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2019-12-18 23:24:53,363 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 4 [2019-12-18 23:24:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:53,364 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2019-12-18 23:24:53,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2019-12-18 23:24:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 23:24:53,365 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:53,365 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 23:24:53,365 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash 247238709, now seen corresponding path program 1 times [2019-12-18 23:24:53,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:53,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045206761] [2019-12-18 23:24:53,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:53,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045206761] [2019-12-18 23:24:53,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:53,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:53,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495845778] [2019-12-18 23:24:53,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:53,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:53,445 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 3 states. [2019-12-18 23:24:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:53,462 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2019-12-18 23:24:53,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:53,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 23:24:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:53,463 INFO L225 Difference]: With dead ends: 26 [2019-12-18 23:24:53,464 INFO L226 Difference]: Without dead ends: 26 [2019-12-18 23:24:53,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-18 23:24:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-18 23:24:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-18 23:24:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-12-18 23:24:53,469 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 5 [2019-12-18 23:24:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:53,469 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-12-18 23:24:53,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-12-18 23:24:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 23:24:53,470 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:53,471 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 23:24:53,471 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash -940684826, now seen corresponding path program 1 times [2019-12-18 23:24:53,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:53,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351508582] [2019-12-18 23:24:53,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:53,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:53,539 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:53,539 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:53,539 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 23:24:53,555 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,556 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,556 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,556 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,556 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,557 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,557 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,557 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,557 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,558 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,558 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,558 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,559 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,559 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,560 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,560 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,560 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,560 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,561 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,572 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,572 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,573 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,573 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,573 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:53,578 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:53,578 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:53,578 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:53,579 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:53,579 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:53,579 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:53,579 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:53,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:53,579 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:53,583 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions [2019-12-18 23:24:53,583 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 23:24:53,630 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 23:24:53,630 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:53,632 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 28/176 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-18 23:24:53,636 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 23:24:53,678 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 23:24:53,680 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:53,682 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 178 events. 22/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 451 event pairs. 28/176 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2019-12-18 23:24:53,686 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2019-12-18 23:24:53,686 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:54,806 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:54,894 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1597 [2019-12-18 23:24:54,895 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 23:24:54,895 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions [2019-12-18 23:24:54,906 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-18 23:24:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-18 23:24:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:54,907 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:54,907 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:54,908 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash 12287151, now seen corresponding path program 1 times [2019-12-18 23:24:54,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:54,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420380109] [2019-12-18 23:24:54,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:54,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420380109] [2019-12-18 23:24:54,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:54,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:54,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707249355] [2019-12-18 23:24:54,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:54,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:54,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:54,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:54,956 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2019-12-18 23:24:54,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:54,997 INFO L93 Difference]: Finished difference Result 292 states and 661 transitions. [2019-12-18 23:24:54,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:54,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:55,007 INFO L225 Difference]: With dead ends: 292 [2019-12-18 23:24:55,007 INFO L226 Difference]: Without dead ends: 241 [2019-12-18 23:24:55,008 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-12-18 23:24:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2019-12-18 23:24:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-12-18 23:24:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 550 transitions. [2019-12-18 23:24:55,041 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 550 transitions. Word has length 4 [2019-12-18 23:24:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:55,041 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 550 transitions. [2019-12-18 23:24:55,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 550 transitions. [2019-12-18 23:24:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 23:24:55,042 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:55,042 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 23:24:55,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash 380901951, now seen corresponding path program 1 times [2019-12-18 23:24:55,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:55,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562840551] [2019-12-18 23:24:55,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:55,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562840551] [2019-12-18 23:24:55,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:55,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:55,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121086301] [2019-12-18 23:24:55,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:55,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:55,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:55,087 INFO L87 Difference]: Start difference. First operand 241 states and 550 transitions. Second operand 3 states. [2019-12-18 23:24:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:55,120 INFO L93 Difference]: Finished difference Result 241 states and 549 transitions. [2019-12-18 23:24:55,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:55,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 23:24:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:55,123 INFO L225 Difference]: With dead ends: 241 [2019-12-18 23:24:55,123 INFO L226 Difference]: Without dead ends: 241 [2019-12-18 23:24:55,124 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-12-18 23:24:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2019-12-18 23:24:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-12-18 23:24:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 549 transitions. [2019-12-18 23:24:55,158 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 549 transitions. Word has length 5 [2019-12-18 23:24:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:55,159 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 549 transitions. [2019-12-18 23:24:55,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 549 transitions. [2019-12-18 23:24:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:24:55,160 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:55,161 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:55,161 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1705906013, now seen corresponding path program 1 times [2019-12-18 23:24:55,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:55,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529682320] [2019-12-18 23:24:55,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:55,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529682320] [2019-12-18 23:24:55,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:55,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:55,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556805375] [2019-12-18 23:24:55,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:55,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:55,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:55,246 INFO L87 Difference]: Start difference. First operand 241 states and 549 transitions. Second operand 4 states. [2019-12-18 23:24:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:55,281 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2019-12-18 23:24:55,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:55,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 23:24:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:55,283 INFO L225 Difference]: With dead ends: 203 [2019-12-18 23:24:55,283 INFO L226 Difference]: Without dead ends: 203 [2019-12-18 23:24:55,284 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-18 23:24:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2019-12-18 23:24:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-18 23:24:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2019-12-18 23:24:55,299 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 9 [2019-12-18 23:24:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:55,299 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2019-12-18 23:24:55,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:24:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2019-12-18 23:24:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:24:55,300 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:55,301 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-18 23:24:55,301 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:55,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1086197660, now seen corresponding path program 1 times [2019-12-18 23:24:55,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:55,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500489376] [2019-12-18 23:24:55,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:55,338 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:55,339 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:55,339 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:55,339 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 23:24:55,345 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,345 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,345 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,345 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,346 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,346 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,346 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,346 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,346 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,346 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,347 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,347 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,347 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,347 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,347 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,347 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,348 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,348 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,348 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,348 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,348 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,349 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,349 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,349 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,349 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,349 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,351 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,351 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,351 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,351 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,351 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,353 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,353 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,353 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,353 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,353 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:55,356 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:55,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:55,356 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:55,357 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:55,357 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:55,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:55,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:55,357 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:55,357 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:55,359 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions [2019-12-18 23:24:55,360 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 23:24:55,395 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 23:24:55,395 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:55,398 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 58/327 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-18 23:24:55,404 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 23:24:55,433 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 23:24:55,433 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:55,436 INFO L76 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 325 events. 44/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1074 event pairs. 58/327 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2019-12-18 23:24:55,441 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2019-12-18 23:24:55,441 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:56,742 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:56,826 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2828 [2019-12-18 23:24:56,826 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 23:24:56,826 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions [2019-12-18 23:24:56,874 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2019-12-18 23:24:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2019-12-18 23:24:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:56,875 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:56,875 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:56,875 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:56,876 INFO L82 PathProgramCache]: Analyzing trace with hash 16813297, now seen corresponding path program 1 times [2019-12-18 23:24:56,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:56,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112210856] [2019-12-18 23:24:56,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:56,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112210856] [2019-12-18 23:24:56,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:56,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:56,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599346797] [2019-12-18 23:24:56,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:56,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:56,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:56,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:56,906 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2019-12-18 23:24:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:56,934 INFO L93 Difference]: Finished difference Result 1400 states and 4061 transitions. [2019-12-18 23:24:56,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:56,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:56,945 INFO L225 Difference]: With dead ends: 1400 [2019-12-18 23:24:56,946 INFO L226 Difference]: Without dead ends: 1149 [2019-12-18 23:24:56,946 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-12-18 23:24:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-12-18 23:24:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-12-18 23:24:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3360 transitions. [2019-12-18 23:24:57,028 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3360 transitions. Word has length 4 [2019-12-18 23:24:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:57,028 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3360 transitions. [2019-12-18 23:24:57,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3360 transitions. [2019-12-18 23:24:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 23:24:57,029 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:57,029 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 23:24:57,029 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash 521212778, now seen corresponding path program 1 times [2019-12-18 23:24:57,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:57,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333909071] [2019-12-18 23:24:57,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:57,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333909071] [2019-12-18 23:24:57,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:57,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:57,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873210679] [2019-12-18 23:24:57,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:57,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:57,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:57,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:57,098 INFO L87 Difference]: Start difference. First operand 1149 states and 3360 transitions. Second operand 3 states. [2019-12-18 23:24:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:57,125 INFO L93 Difference]: Finished difference Result 1149 states and 3359 transitions. [2019-12-18 23:24:57,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:57,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 23:24:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:57,134 INFO L225 Difference]: With dead ends: 1149 [2019-12-18 23:24:57,135 INFO L226 Difference]: Without dead ends: 1149 [2019-12-18 23:24:57,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-12-18 23:24:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-12-18 23:24:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-12-18 23:24:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3359 transitions. [2019-12-18 23:24:57,174 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3359 transitions. Word has length 5 [2019-12-18 23:24:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:57,175 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3359 transitions. [2019-12-18 23:24:57,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3359 transitions. [2019-12-18 23:24:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:24:57,177 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:57,177 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:57,177 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:57,178 INFO L82 PathProgramCache]: Analyzing trace with hash -353960300, now seen corresponding path program 1 times [2019-12-18 23:24:57,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:57,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400256856] [2019-12-18 23:24:57,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:57,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400256856] [2019-12-18 23:24:57,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:57,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:57,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534341274] [2019-12-18 23:24:57,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:57,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:57,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:57,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:57,235 INFO L87 Difference]: Start difference. First operand 1149 states and 3359 transitions. Second operand 4 states. [2019-12-18 23:24:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:57,270 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2019-12-18 23:24:57,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:57,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 23:24:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:57,278 INFO L225 Difference]: With dead ends: 1015 [2019-12-18 23:24:57,278 INFO L226 Difference]: Without dead ends: 1015 [2019-12-18 23:24:57,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-12-18 23:24:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2019-12-18 23:24:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-12-18 23:24:57,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2019-12-18 23:24:57,308 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 9 [2019-12-18 23:24:57,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:57,308 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2019-12-18 23:24:57,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:24:57,308 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2019-12-18 23:24:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 23:24:57,310 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:57,310 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-18 23:24:57,311 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash 880459202, now seen corresponding path program 1 times [2019-12-18 23:24:57,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:57,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004767950] [2019-12-18 23:24:57,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:24:57,353 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:24:57,353 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:24:57,353 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:24:57,353 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 23:24:57,366 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,366 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,369 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,369 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,369 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,369 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,370 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,370 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,371 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,371 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,371 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,371 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,372 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,372 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,372 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,372 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,372 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,373 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,373 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,374 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,374 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,375 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,375 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,375 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,376 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,376 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,376 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,381 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,382 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,382 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,382 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,382 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,384 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,384 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,384 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,385 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,385 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,387 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,387 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,387 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,388 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,388 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:24:57,396 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:24:57,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:24:57,396 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:24:57,396 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:24:57,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:24:57,397 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:24:57,397 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:24:57,397 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:24:57,397 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:24:57,399 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions [2019-12-18 23:24:57,400 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 23:24:57,493 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 23:24:57,493 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:57,499 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 109/611 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-18 23:24:57,515 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 23:24:57,572 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 23:24:57,572 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:24:57,576 INFO L76 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 608 events. 90/608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2681 event pairs. 109/611 useless extension candidates. Maximal degree in co-relation 345. Up to 32 conditions per place. [2019-12-18 23:24:57,590 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2019-12-18 23:24:57,590 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:24:58,711 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:24:58,875 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3986 [2019-12-18 23:24:58,875 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2019-12-18 23:24:58,876 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions [2019-12-18 23:24:59,179 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2019-12-18 23:24:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2019-12-18 23:24:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:24:59,180 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:59,180 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:24:59,180 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash 21615603, now seen corresponding path program 1 times [2019-12-18 23:24:59,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:59,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500209854] [2019-12-18 23:24:59,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:24:59,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500209854] [2019-12-18 23:24:59,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:59,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:59,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207292813] [2019-12-18 23:24:59,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:59,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:59,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:59,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:59,198 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2019-12-18 23:24:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:59,260 INFO L93 Difference]: Finished difference Result 6732 states and 23805 transitions. [2019-12-18 23:24:59,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:59,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:24:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:59,313 INFO L225 Difference]: With dead ends: 6732 [2019-12-18 23:24:59,313 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 23:24:59,314 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 23:24:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 23:24:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 23:24:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19554 transitions. [2019-12-18 23:24:59,566 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19554 transitions. Word has length 4 [2019-12-18 23:24:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:59,566 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19554 transitions. [2019-12-18 23:24:59,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19554 transitions. [2019-12-18 23:24:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 23:24:59,567 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:59,567 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 23:24:59,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:59,568 INFO L82 PathProgramCache]: Analyzing trace with hash 670084515, now seen corresponding path program 1 times [2019-12-18 23:24:59,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:59,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424904600] [2019-12-18 23:24:59,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:24:59,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424904600] [2019-12-18 23:24:59,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:59,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:24:59,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329957116] [2019-12-18 23:24:59,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:24:59,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:59,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:24:59,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:59,598 INFO L87 Difference]: Start difference. First operand 5481 states and 19554 transitions. Second operand 3 states. [2019-12-18 23:24:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:59,646 INFO L93 Difference]: Finished difference Result 5481 states and 19553 transitions. [2019-12-18 23:24:59,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:24:59,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 23:24:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:59,706 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 23:24:59,706 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 23:24:59,707 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:24:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 23:24:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 23:24:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 23:24:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19553 transitions. [2019-12-18 23:24:59,887 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19553 transitions. Word has length 5 [2019-12-18 23:24:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:24:59,887 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19553 transitions. [2019-12-18 23:24:59,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:24:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19553 transitions. [2019-12-18 23:24:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:24:59,889 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:24:59,889 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:24:59,890 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:24:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:24:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1577131179, now seen corresponding path program 1 times [2019-12-18 23:24:59,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:24:59,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827180846] [2019-12-18 23:24:59,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:24:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:24:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:24:59,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827180846] [2019-12-18 23:24:59,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:24:59,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:24:59,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829134162] [2019-12-18 23:24:59,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:24:59,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:24:59,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:24:59,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:24:59,932 INFO L87 Difference]: Start difference. First operand 5481 states and 19553 transitions. Second operand 4 states. [2019-12-18 23:24:59,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:24:59,978 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2019-12-18 23:24:59,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:24:59,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 23:24:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:24:59,997 INFO L225 Difference]: With dead ends: 4995 [2019-12-18 23:24:59,997 INFO L226 Difference]: Without dead ends: 4995 [2019-12-18 23:24:59,997 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:25:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2019-12-18 23:25:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2019-12-18 23:25:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2019-12-18 23:25:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2019-12-18 23:25:00,220 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 9 [2019-12-18 23:25:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:00,220 INFO L462 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2019-12-18 23:25:00,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:25:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2019-12-18 23:25:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:25:00,223 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:00,223 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:00,224 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:00,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1965943814, now seen corresponding path program 1 times [2019-12-18 23:25:00,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:00,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514194003] [2019-12-18 23:25:00,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:00,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514194003] [2019-12-18 23:25:00,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820767878] [2019-12-18 23:25:00,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:00,350 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:25:00,352 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:25:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:00,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:25:00,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 23:25:00,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902124401] [2019-12-18 23:25:00,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:25:00,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:25:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:25:00,387 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 6 states. [2019-12-18 23:25:00,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:00,436 INFO L93 Difference]: Finished difference Result 4793 states and 16469 transitions. [2019-12-18 23:25:00,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:25:00,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 23:25:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:00,455 INFO L225 Difference]: With dead ends: 4793 [2019-12-18 23:25:00,455 INFO L226 Difference]: Without dead ends: 4793 [2019-12-18 23:25:00,455 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:25:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2019-12-18 23:25:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4793. [2019-12-18 23:25:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2019-12-18 23:25:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2019-12-18 23:25:00,589 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 16 [2019-12-18 23:25:00,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:00,589 INFO L462 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2019-12-18 23:25:00,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:25:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2019-12-18 23:25:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 23:25:00,591 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:00,592 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:00,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:00,795 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1144536387, now seen corresponding path program 1 times [2019-12-18 23:25:00,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:00,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881704157] [2019-12-18 23:25:00,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:25:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:25:00,826 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:25:00,826 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:25:00,826 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:25:00,826 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 23:25:00,834 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,834 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,834 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,835 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,835 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,835 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,835 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,835 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,835 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,836 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,837 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,837 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,837 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,837 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,837 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,837 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,838 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,839 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,839 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,839 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,839 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,839 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,839 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,840 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,840 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,840 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,840 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,840 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,842 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,842 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,842 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,842 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,842 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,843 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,844 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,844 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,844 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,844 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,845 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,845 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,846 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,846 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,846 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,847 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,847 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,847 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,847 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,848 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:00,852 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:25:00,852 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:25:00,853 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:25:00,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:25:00,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:25:00,853 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:25:00,853 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:25:00,853 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:25:00,853 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:25:00,854 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions [2019-12-18 23:25:00,855 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 23:25:01,089 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 23:25:01,090 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:25:01,098 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 201/1164 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-18 23:25:01,124 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 23:25:01,265 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 23:25:01,266 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:25:01,277 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 1167 events. 188/1167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6730 event pairs. 201/1164 useless extension candidates. Maximal degree in co-relation 653. Up to 80 conditions per place. [2019-12-18 23:25:01,299 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2019-12-18 23:25:01,299 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:25:02,549 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 23:25:02,680 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6149 [2019-12-18 23:25:02,681 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-18 23:25:02,681 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions [2019-12-18 23:25:04,770 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2019-12-18 23:25:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2019-12-18 23:25:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:25:04,770 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:04,770 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:25:04,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:04,771 INFO L82 PathProgramCache]: Analyzing trace with hash 26696947, now seen corresponding path program 1 times [2019-12-18 23:25:04,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:04,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919418022] [2019-12-18 23:25:04,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:25:04,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919418022] [2019-12-18 23:25:04,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:25:04,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:25:04,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130711889] [2019-12-18 23:25:04,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:25:04,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:04,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:25:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:04,809 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2019-12-18 23:25:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:05,107 INFO L93 Difference]: Finished difference Result 32560 states and 135677 transitions. [2019-12-18 23:25:05,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:25:05,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:25:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:05,292 INFO L225 Difference]: With dead ends: 32560 [2019-12-18 23:25:05,293 INFO L226 Difference]: Without dead ends: 26309 [2019-12-18 23:25:05,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2019-12-18 23:25:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2019-12-18 23:25:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2019-12-18 23:25:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110676 transitions. [2019-12-18 23:25:06,435 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110676 transitions. Word has length 4 [2019-12-18 23:25:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:06,435 INFO L462 AbstractCegarLoop]: Abstraction has 26309 states and 110676 transitions. [2019-12-18 23:25:06,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:25:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110676 transitions. [2019-12-18 23:25:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 23:25:06,436 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:06,436 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 23:25:06,436 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash 827606282, now seen corresponding path program 1 times [2019-12-18 23:25:06,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:06,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651432912] [2019-12-18 23:25:06,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:25:06,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651432912] [2019-12-18 23:25:06,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:25:06,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:25:06,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824444499] [2019-12-18 23:25:06,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:25:06,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:06,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:25:06,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:06,470 INFO L87 Difference]: Start difference. First operand 26309 states and 110676 transitions. Second operand 3 states. [2019-12-18 23:25:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:06,598 INFO L93 Difference]: Finished difference Result 26309 states and 110675 transitions. [2019-12-18 23:25:06,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:25:06,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 23:25:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:06,692 INFO L225 Difference]: With dead ends: 26309 [2019-12-18 23:25:06,692 INFO L226 Difference]: Without dead ends: 26309 [2019-12-18 23:25:06,692 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2019-12-18 23:25:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2019-12-18 23:25:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2019-12-18 23:25:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110675 transitions. [2019-12-18 23:25:09,127 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110675 transitions. Word has length 5 [2019-12-18 23:25:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:09,127 INFO L462 AbstractCegarLoop]: Abstraction has 26309 states and 110675 transitions. [2019-12-18 23:25:09,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:25:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110675 transitions. [2019-12-18 23:25:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:25:09,127 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:09,128 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:09,128 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:09,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1295838944, now seen corresponding path program 1 times [2019-12-18 23:25:09,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:09,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966993404] [2019-12-18 23:25:09,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:09,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966993404] [2019-12-18 23:25:09,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:25:09,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:25:09,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448761] [2019-12-18 23:25:09,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:25:09,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:25:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:25:09,178 INFO L87 Difference]: Start difference. First operand 26309 states and 110675 transitions. Second operand 4 states. [2019-12-18 23:25:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:09,596 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2019-12-18 23:25:09,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:25:09,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 23:25:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:09,652 INFO L225 Difference]: With dead ends: 24543 [2019-12-18 23:25:09,652 INFO L226 Difference]: Without dead ends: 24543 [2019-12-18 23:25:09,653 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:25:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2019-12-18 23:25:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2019-12-18 23:25:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2019-12-18 23:25:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2019-12-18 23:25:10,233 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 9 [2019-12-18 23:25:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:10,233 INFO L462 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2019-12-18 23:25:10,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:25:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2019-12-18 23:25:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:25:10,234 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:10,234 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:10,235 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:10,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1647353871, now seen corresponding path program 1 times [2019-12-18 23:25:10,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:10,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138705168] [2019-12-18 23:25:10,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:10,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138705168] [2019-12-18 23:25:10,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250096890] [2019-12-18 23:25:10,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:10,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:25:10,653 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:25:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:10,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:25:10,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 23:25:10,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23066529] [2019-12-18 23:25:10,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:25:10,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:10,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:25:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:25:10,676 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 6 states. [2019-12-18 23:25:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:10,792 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2019-12-18 23:25:10,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:25:10,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 23:25:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:10,848 INFO L225 Difference]: With dead ends: 23573 [2019-12-18 23:25:10,848 INFO L226 Difference]: Without dead ends: 23573 [2019-12-18 23:25:10,848 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:25:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2019-12-18 23:25:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2019-12-18 23:25:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2019-12-18 23:25:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2019-12-18 23:25:13,116 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2019-12-18 23:25:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:13,117 INFO L462 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2019-12-18 23:25:13,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:25:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2019-12-18 23:25:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 23:25:13,119 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:13,119 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:13,322 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:13,322 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:13,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:13,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1700547162, now seen corresponding path program 1 times [2019-12-18 23:25:13,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:13,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383760168] [2019-12-18 23:25:13,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:13,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383760168] [2019-12-18 23:25:13,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149917145] [2019-12-18 23:25:13,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:13,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 23:25:13,444 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:25:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:25:13,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:25:13,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 23:25:13,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400574424] [2019-12-18 23:25:13,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:25:13,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:25:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:25:13,477 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2019-12-18 23:25:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:13,603 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2019-12-18 23:25:13,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:25:13,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 23:25:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:13,657 INFO L225 Difference]: With dead ends: 23557 [2019-12-18 23:25:13,657 INFO L226 Difference]: Without dead ends: 23557 [2019-12-18 23:25:13,657 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:25:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2019-12-18 23:25:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2019-12-18 23:25:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2019-12-18 23:25:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2019-12-18 23:25:14,199 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2019-12-18 23:25:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:25:14,199 INFO L462 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2019-12-18 23:25:14,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:25:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2019-12-18 23:25:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 23:25:14,204 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:14,204 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:25:14,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:25:14,405 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:14,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1187474448, now seen corresponding path program 1 times [2019-12-18 23:25:14,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:14,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641667496] [2019-12-18 23:25:14,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:25:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:25:14,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:25:14,450 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:25:14,450 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:25:14,450 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 23:25:14,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,656 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,656 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,656 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,657 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,657 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,657 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,657 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,657 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,657 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,658 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,659 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,660 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,661 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,662 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,662 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,662 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,662 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,662 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,663 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,663 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,663 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,663 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,664 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,664 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,665 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,665 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,665 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,667 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,667 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,667 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,667 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,668 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,669 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,669 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,669 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,669 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,669 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,671 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,671 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,671 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,671 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,671 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,672 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,672 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,673 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,673 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,673 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:25:14,678 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:25:14,678 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:25:14,678 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:25:14,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:25:14,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:25:14,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:25:14,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:25:14,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:25:14,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:25:14,680 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 101 transitions [2019-12-18 23:25:14,680 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 23:25:15,020 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 23:25:15,020 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:25:15,045 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 378/2266 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-18 23:25:15,100 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 23:25:15,400 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 23:25:15,400 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:25:15,424 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 2286 events. 398/2286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 16149 event pairs. 378/2266 useless extension candidates. Maximal degree in co-relation 1266. Up to 192 conditions per place. [2019-12-18 23:25:15,476 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2019-12-18 23:25:15,476 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:25:16,691 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 23:25:16,785 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7553 [2019-12-18 23:25:16,785 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 23:25:16,786 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions [2019-12-18 23:25:45,307 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2019-12-18 23:25:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2019-12-18 23:25:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 23:25:45,308 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:25:45,308 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 23:25:45,308 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:25:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:25:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash 32083310, now seen corresponding path program 1 times [2019-12-18 23:25:45,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:25:45,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838993553] [2019-12-18 23:25:45,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:25:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:25:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:25:45,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838993553] [2019-12-18 23:25:45,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:25:45,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:25:45,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680667883] [2019-12-18 23:25:45,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:25:45,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:25:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:25:45,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:45,335 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2019-12-18 23:25:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:25:49,207 INFO L93 Difference]: Finished difference Result 158372 states and 759149 transitions. [2019-12-18 23:25:49,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:25:49,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 23:25:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:25:49,662 INFO L225 Difference]: With dead ends: 158372 [2019-12-18 23:25:49,662 INFO L226 Difference]: Without dead ends: 127121 [2019-12-18 23:25:49,662 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:25:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2019-12-18 23:25:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2019-12-18 23:25:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2019-12-18 23:26:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615398 transitions. [2019-12-18 23:26:00,517 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615398 transitions. Word has length 4 [2019-12-18 23:26:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:26:00,517 INFO L462 AbstractCegarLoop]: Abstraction has 127121 states and 615398 transitions. [2019-12-18 23:26:00,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:26:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615398 transitions. [2019-12-18 23:26:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 23:26:00,518 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:26:00,518 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 23:26:00,518 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:26:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:26:00,518 INFO L82 PathProgramCache]: Analyzing trace with hash 994583493, now seen corresponding path program 1 times [2019-12-18 23:26:00,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:26:00,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041724931] [2019-12-18 23:26:00,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:26:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 23:26:00,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041724931] [2019-12-18 23:26:00,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:26:00,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:26:00,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766856649] [2019-12-18 23:26:00,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:26:00,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:26:00,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:26:00,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:26:00,541 INFO L87 Difference]: Start difference. First operand 127121 states and 615398 transitions. Second operand 3 states. [2019-12-18 23:26:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:26:01,217 INFO L93 Difference]: Finished difference Result 127121 states and 615397 transitions. [2019-12-18 23:26:01,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:26:01,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 23:26:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:26:07,892 INFO L225 Difference]: With dead ends: 127121 [2019-12-18 23:26:07,892 INFO L226 Difference]: Without dead ends: 127121 [2019-12-18 23:26:07,892 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:26:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2019-12-18 23:26:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2019-12-18 23:26:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2019-12-18 23:26:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615397 transitions. [2019-12-18 23:26:13,041 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615397 transitions. Word has length 5 [2019-12-18 23:26:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:26:13,041 INFO L462 AbstractCegarLoop]: Abstraction has 127121 states and 615397 transitions. [2019-12-18 23:26:13,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:26:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615397 transitions. [2019-12-18 23:26:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:26:13,041 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:26:13,041 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:26:13,041 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:26:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:26:13,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1024609292, now seen corresponding path program 1 times [2019-12-18 23:26:13,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:26:13,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551567886] [2019-12-18 23:26:13,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:26:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:13,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551567886] [2019-12-18 23:26:13,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:26:13,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:26:13,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129834485] [2019-12-18 23:26:13,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:26:13,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:26:13,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:26:13,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:26:13,079 INFO L87 Difference]: Start difference. First operand 127121 states and 615397 transitions. Second operand 4 states. [2019-12-18 23:26:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:26:14,923 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2019-12-18 23:26:14,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:26:14,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 23:26:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:26:15,321 INFO L225 Difference]: With dead ends: 120747 [2019-12-18 23:26:15,321 INFO L226 Difference]: Without dead ends: 120747 [2019-12-18 23:26:15,321 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:26:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2019-12-18 23:26:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2019-12-18 23:26:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2019-12-18 23:26:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2019-12-18 23:26:27,517 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 9 [2019-12-18 23:26:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:26:27,517 INFO L462 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2019-12-18 23:26:27,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:26:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2019-12-18 23:26:27,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 23:26:27,518 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:26:27,518 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:26:27,518 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:26:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:26:27,519 INFO L82 PathProgramCache]: Analyzing trace with hash 579549320, now seen corresponding path program 1 times [2019-12-18 23:26:27,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:26:27,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096830953] [2019-12-18 23:26:27,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:26:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:27,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096830953] [2019-12-18 23:26:27,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440564315] [2019-12-18 23:26:27,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:26:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:27,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 23:26:27,628 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:26:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:27,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:26:27,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 23:26:27,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542516441] [2019-12-18 23:26:27,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:26:27,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:26:27,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:26:27,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:26:27,652 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2019-12-18 23:26:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:26:28,972 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2019-12-18 23:26:28,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:26:28,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 23:26:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:26:29,346 INFO L225 Difference]: With dead ends: 116193 [2019-12-18 23:26:29,346 INFO L226 Difference]: Without dead ends: 116193 [2019-12-18 23:26:29,346 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:26:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2019-12-18 23:26:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2019-12-18 23:26:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2019-12-18 23:26:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2019-12-18 23:26:38,667 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2019-12-18 23:26:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:26:38,667 INFO L462 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2019-12-18 23:26:38,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:26:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2019-12-18 23:26:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 23:26:38,670 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:26:38,670 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:26:39,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:26:39,737 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:26:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:26:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1298529040, now seen corresponding path program 1 times [2019-12-18 23:26:39,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:26:39,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326164145] [2019-12-18 23:26:39,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:26:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:39,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326164145] [2019-12-18 23:26:39,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924718390] [2019-12-18 23:26:39,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:26:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:39,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 23:26:39,880 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:26:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:39,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:26:39,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 23:26:39,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25313662] [2019-12-18 23:26:39,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 23:26:39,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:26:39,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 23:26:39,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:26:39,913 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2019-12-18 23:26:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:26:40,552 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2019-12-18 23:26:40,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:26:40,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 23:26:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:26:40,913 INFO L225 Difference]: With dead ends: 116177 [2019-12-18 23:26:40,914 INFO L226 Difference]: Without dead ends: 116177 [2019-12-18 23:26:40,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 23:26:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2019-12-18 23:26:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2019-12-18 23:26:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2019-12-18 23:26:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2019-12-18 23:26:51,167 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2019-12-18 23:26:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:26:51,167 INFO L462 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2019-12-18 23:26:51,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 23:26:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2019-12-18 23:26:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 23:26:51,173 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:26:51,173 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:26:51,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:26:51,378 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:26:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:26:51,379 INFO L82 PathProgramCache]: Analyzing trace with hash -982455207, now seen corresponding path program 1 times [2019-12-18 23:26:51,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:26:51,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106892527] [2019-12-18 23:26:51,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:26:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:51,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106892527] [2019-12-18 23:26:51,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186499346] [2019-12-18 23:26:51,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:26:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:26:51,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 23:26:51,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 23:26:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 23:26:51,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 23:26:51,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 23:26:51,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693544303] [2019-12-18 23:26:51,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 23:26:51,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:26:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 23:26:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:26:51,555 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2019-12-18 23:26:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:26:52,197 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2019-12-18 23:26:52,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 23:26:52,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-12-18 23:26:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:26:53,801 INFO L225 Difference]: With dead ends: 116113 [2019-12-18 23:26:53,801 INFO L226 Difference]: Without dead ends: 116113 [2019-12-18 23:26:53,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 23:26:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2019-12-18 23:27:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2019-12-18 23:27:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2019-12-18 23:27:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2019-12-18 23:27:03,791 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2019-12-18 23:27:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:27:03,791 INFO L462 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2019-12-18 23:27:03,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 23:27:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2019-12-18 23:27:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-18 23:27:03,806 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:27:03,806 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:27:04,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 23:27:04,011 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:27:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:27:04,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1095808649, now seen corresponding path program 1 times [2019-12-18 23:27:04,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:27:04,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185744153] [2019-12-18 23:27:04,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:27:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:27:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 23:27:04,037 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 23:27:04,038 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 23:27:04,038 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 23:27:04,038 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-18 23:27:04,046 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,046 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,047 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,048 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,049 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,050 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,051 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,052 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,052 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,052 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,053 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,053 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,053 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,053 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,053 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,054 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,054 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,054 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,054 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,054 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,055 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,056 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,056 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,056 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,056 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,058 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,058 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,058 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,058 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,058 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,061 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,061 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,061 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,061 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,061 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,062 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,063 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,063 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,063 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,063 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:27:04,068 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 23:27:04,068 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:27:04,068 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:27:04,068 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:27:04,068 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:27:04,068 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:27:04,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:27:04,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:27:04,069 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:27:04,069 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions [2019-12-18 23:27:04,070 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 23:27:05,716 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 23:27:05,716 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:27:05,752 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 736/4493 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-18 23:27:05,851 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 23:27:06,406 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 23:27:06,407 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:27:06,453 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4541 events. 848/4541 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38159 event pairs. 736/4493 useless extension candidates. Maximal degree in co-relation 2504. Up to 448 conditions per place. [2019-12-18 23:27:06,537 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2019-12-18 23:27:06,538 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:27:07,700 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 23:27:07,780 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11010 [2019-12-18 23:27:07,780 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-18 23:27:07,781 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 48 transitions Received shutdown request... [2019-12-18 23:28:33,853 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 23:28:33,856 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 23:28:33,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:28:33 BasicIcfg [2019-12-18 23:28:33,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:28:33,858 INFO L168 Benchmark]: Toolchain (without parser) took 223904.81 ms. Allocated memory was 145.2 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 101.8 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,859 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.56 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 162.5 MB in the end (delta: -60.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.12 ms. Allocated memory is still 203.4 MB. Free memory was 161.8 MB in the beginning and 159.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,860 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 158.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,861 INFO L168 Benchmark]: RCFGBuilder took 464.13 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 136.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,861 INFO L168 Benchmark]: TraceAbstraction took 222660.94 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 136.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2019-12-18 23:28:33,864 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.56 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 162.5 MB in the end (delta: -60.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.12 ms. Allocated memory is still 203.4 MB. Free memory was 161.8 MB in the beginning and 159.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.49 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 158.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.13 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 136.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222660.94 ms. Allocated memory was 203.4 MB in the beginning and 2.9 GB in the end (delta: 2.6 GB). Free memory was 136.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 14 ProgramPointsAfterwards, 66 TransitionsBefore, 14 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 183 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 289 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 71 ProgramPointsBefore, 24 ProgramPointsAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 450 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1597 CheckedPairsTotal, 55 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 30 ProgramPointsAfterwards, 80 TransitionsBefore, 28 TransitionsAfterwards, 1470 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 746 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2828 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 87 ProgramPointsBefore, 36 ProgramPointsAfterwards, 87 TransitionsBefore, 33 TransitionsAfterwards, 2120 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 1032 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3986 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 95 ProgramPointsBefore, 42 ProgramPointsAfterwards, 94 TransitionsBefore, 38 TransitionsAfterwards, 2850 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1370 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6149 CheckedPairsTotal, 60 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 103 ProgramPointsBefore, 48 ProgramPointsAfterwards, 101 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1666 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 7553 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.7s, 111 ProgramPointsBefore, 54 ProgramPointsAfterwards, 108 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2181 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11010 CheckedPairsTotal, 65 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 675]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 675). Cancelled while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 48 transitions. Already constructed 223103 states. Currently 33329 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Result: TIMEOUT, OverallTime: 89.7s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown