/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 15:31:44,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 15:31:44,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 15:31:44,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 15:31:44,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 15:31:44,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 15:31:44,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 15:31:44,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 15:31:44,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 15:31:44,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 15:31:44,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 15:31:44,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 15:31:44,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 15:31:44,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 15:31:44,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 15:31:44,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 15:31:44,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 15:31:44,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 15:31:44,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 15:31:44,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 15:31:44,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 15:31:44,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 15:31:44,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 15:31:44,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 15:31:44,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 15:31:44,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 15:31:44,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 15:31:44,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 15:31:44,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-18 15:31:44,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 15:31:44,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 15:31:44,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 15:31:44,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 15:31:44,889 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 15:31:44,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 15:31:44,889 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 15:31:44,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 15:31:44,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 15:31:44,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 15:31:44,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 15:31:44,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 15:31:44,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 15:31:44,892 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 15:31:44,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 15:31:44,892 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 15:31:44,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 15:31:44,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 15:31:44,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 15:31:44,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 15:31:44,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 15:31:44,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 15:31:44,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 15:31:44,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 15:31:44,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 15:31:44,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 15:31:44,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 15:31:44,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 15:31:44,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-18 15:31:44,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 15:31:45,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 15:31:45,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 15:31:45,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 15:31:45,216 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 15:31:45,217 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 15:31:45,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2019-12-18 15:31:45,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387217eaa/ed87c1dd66f94a40841da1628d10eb24/FLAG752ea6e1b [2019-12-18 15:31:45,857 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 15:31:45,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2019-12-18 15:31:45,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387217eaa/ed87c1dd66f94a40841da1628d10eb24/FLAG752ea6e1b [2019-12-18 15:31:46,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387217eaa/ed87c1dd66f94a40841da1628d10eb24 [2019-12-18 15:31:46,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 15:31:46,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 15:31:46,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 15:31:46,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 15:31:46,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 15:31:46,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c95e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46, skipping insertion in model container [2019-12-18 15:31:46,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 15:31:46,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 15:31:46,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:31:46,654 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 15:31:46,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:31:46,805 INFO L208 MainTranslator]: Completed translation [2019-12-18 15:31:46,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46 WrapperNode [2019-12-18 15:31:46,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 15:31:46,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 15:31:46,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 15:31:46,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 15:31:46,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 15:31:46,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 15:31:46,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 15:31:46,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 15:31:46,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (1/1) ... [2019-12-18 15:31:46,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 15:31:46,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 15:31:46,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 15:31:46,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 15:31:46,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (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 15:31:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-12-18 15:31:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-18 15:31:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 15:31:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-12-18 15:31:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-12-18 15:31:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 15:31:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 15:31:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 15:31:46,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 15:31:46,968 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 15:31:47,370 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 15:31:47,370 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-18 15:31:47,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:31:47 BoogieIcfgContainer [2019-12-18 15:31:47,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 15:31:47,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 15:31:47,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 15:31:47,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 15:31:47,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:31:46" (1/3) ... [2019-12-18 15:31:47,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ce6cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:31:47, skipping insertion in model container [2019-12-18 15:31:47,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:31:46" (2/3) ... [2019-12-18 15:31:47,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ce6cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:31:47, skipping insertion in model container [2019-12-18 15:31:47,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:31:47" (3/3) ... [2019-12-18 15:31:47,381 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2019-12-18 15:31:47,391 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 15:31:47,392 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 15:31:47,399 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 15:31:47,400 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 15:31:47,426 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,427 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,427 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,427 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,428 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,428 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,429 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,432 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,433 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,433 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,433 WARN L315 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,434 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:47,466 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:31:47,491 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:31:47,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:31:47,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:31:47,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:31:47,492 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:31:47,492 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:31:47,492 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:31:47,492 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:31:47,514 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions [2019-12-18 15:31:47,516 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 15:31:47,609 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 15:31:47,610 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:47,619 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 15:31:47,625 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions [2019-12-18 15:31:47,663 INFO L126 PetriNetUnfolder]: 11/98 cut-off events. [2019-12-18 15:31:47,664 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:47,665 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 15:31:47,668 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2019-12-18 15:31:47,669 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:31:49,072 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 15:31:49,181 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-12-18 15:31:49,222 INFO L206 etLargeBlockEncoding]: Checked pairs total: 289 [2019-12-18 15:31:49,223 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 15:31:49,228 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 14 transitions [2019-12-18 15:31:49,239 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2019-12-18 15:31:49,243 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-18 15:31:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 15:31:49,250 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:49,252 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 15:31:49,253 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:49,260 INFO L82 PathProgramCache]: Analyzing trace with hash 7975439, now seen corresponding path program 1 times [2019-12-18 15:31:49,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:49,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717430787] [2019-12-18 15:31:49,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:49,513 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 15:31:49,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717430787] [2019-12-18 15:31:49,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:49,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:49,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726608066] [2019-12-18 15:31:49,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:49,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:49,558 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2019-12-18 15:31:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:49,609 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2019-12-18 15:31:49,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:49,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 15:31:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:49,621 INFO L225 Difference]: With dead ends: 27 [2019-12-18 15:31:49,622 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 15:31:49,623 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 15:31:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 15:31:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 15:31:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 15:31:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-12-18 15:31:49,660 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2019-12-18 15:31:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:49,661 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-12-18 15:31:49,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-18 15:31:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 15:31:49,662 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:49,662 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 15:31:49,662 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash -940684826, now seen corresponding path program 1 times [2019-12-18 15:31:49,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:49,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934041292] [2019-12-18 15:31:49,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:49,766 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:31:49,766 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:31:49,768 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:31:49,768 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 15:31:49,775 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,775 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,775 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,776 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,776 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,776 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,776 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,777 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,777 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,777 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,777 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,777 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,778 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,778 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,778 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,779 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,779 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,779 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,779 WARN L315 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,781 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,781 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,781 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,782 WARN L315 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,782 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:49,788 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:31:49,788 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:31:49,789 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:31:49,789 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:31:49,789 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:31:49,789 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:31:49,789 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:31:49,789 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:31:49,789 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:31:49,792 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 73 transitions [2019-12-18 15:31:49,792 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 15:31:49,822 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 15:31:49,823 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:49,825 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 15:31:49,830 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions [2019-12-18 15:31:49,857 INFO L126 PetriNetUnfolder]: 22/178 cut-off events. [2019-12-18 15:31:49,857 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:49,862 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 15:31:49,869 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2019-12-18 15:31:49,869 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:31:51,156 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 15:31:51,243 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1597 [2019-12-18 15:31:51,243 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 15:31:51,243 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 23 transitions [2019-12-18 15:31:51,255 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-18 15:31:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-18 15:31:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 15:31:51,256 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:51,256 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 15:31:51,257 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 12287151, now seen corresponding path program 1 times [2019-12-18 15:31:51,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:51,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542139758] [2019-12-18 15:31:51,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:51,308 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 15:31:51,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542139758] [2019-12-18 15:31:51,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:51,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:51,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316778474] [2019-12-18 15:31:51,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:51,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:51,310 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2019-12-18 15:31:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:51,341 INFO L93 Difference]: Finished difference Result 292 states and 661 transitions. [2019-12-18 15:31:51,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:51,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 15:31:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:51,348 INFO L225 Difference]: With dead ends: 292 [2019-12-18 15:31:51,348 INFO L226 Difference]: Without dead ends: 241 [2019-12-18 15:31:51,349 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 15:31:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-12-18 15:31:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2019-12-18 15:31:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-12-18 15:31:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 550 transitions. [2019-12-18 15:31:51,382 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 550 transitions. Word has length 4 [2019-12-18 15:31:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:51,382 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 550 transitions. [2019-12-18 15:31:51,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 550 transitions. [2019-12-18 15:31:51,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 15:31:51,383 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:51,383 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 15:31:51,384 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:51,384 INFO L82 PathProgramCache]: Analyzing trace with hash 380901951, now seen corresponding path program 1 times [2019-12-18 15:31:51,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:51,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254939861] [2019-12-18 15:31:51,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:51,421 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 15:31:51,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254939861] [2019-12-18 15:31:51,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:51,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:51,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383597396] [2019-12-18 15:31:51,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:51,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:51,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:51,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:51,423 INFO L87 Difference]: Start difference. First operand 241 states and 550 transitions. Second operand 3 states. [2019-12-18 15:31:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:51,445 INFO L93 Difference]: Finished difference Result 241 states and 549 transitions. [2019-12-18 15:31:51,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:51,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 15:31:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:51,449 INFO L225 Difference]: With dead ends: 241 [2019-12-18 15:31:51,449 INFO L226 Difference]: Without dead ends: 241 [2019-12-18 15:31:51,450 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 15:31:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-12-18 15:31:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2019-12-18 15:31:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-12-18 15:31:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 549 transitions. [2019-12-18 15:31:51,471 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 549 transitions. Word has length 5 [2019-12-18 15:31:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:51,471 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 549 transitions. [2019-12-18 15:31:51,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 549 transitions. [2019-12-18 15:31:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:31:51,472 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:51,473 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:51,473 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1705906013, now seen corresponding path program 1 times [2019-12-18 15:31:51,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:51,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792437560] [2019-12-18 15:31:51,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:51,520 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 15:31:51,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792437560] [2019-12-18 15:31:51,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:51,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:31:51,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985139529] [2019-12-18 15:31:51,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:31:51,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:51,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:31:51,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:31:51,522 INFO L87 Difference]: Start difference. First operand 241 states and 549 transitions. Second operand 4 states. [2019-12-18 15:31:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:51,570 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2019-12-18 15:31:51,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:31:51,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:31:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:51,573 INFO L225 Difference]: With dead ends: 203 [2019-12-18 15:31:51,573 INFO L226 Difference]: Without dead ends: 203 [2019-12-18 15:31:51,574 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 15:31:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-12-18 15:31:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2019-12-18 15:31:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-12-18 15:31:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2019-12-18 15:31:51,587 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 9 [2019-12-18 15:31:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:51,588 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2019-12-18 15:31:51,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:31:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2019-12-18 15:31:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 15:31:51,589 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:51,590 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-12-18 15:31:51,590 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:51,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1086197660, now seen corresponding path program 1 times [2019-12-18 15:31:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:51,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745033648] [2019-12-18 15:31:51,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:51,627 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:31:51,627 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:31:51,627 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:31:51,628 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 15:31:51,634 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,634 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,634 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,634 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,635 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,635 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,635 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,635 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,635 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,636 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,636 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,636 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,636 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,636 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,637 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,637 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,637 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,637 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,637 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,637 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,638 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,638 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,638 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,638 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,639 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,639 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,640 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,640 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,641 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,641 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,641 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,642 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,642 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,643 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,643 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,643 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:51,646 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:31:51,647 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:31:51,647 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:31:51,647 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:31:51,647 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:31:51,647 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:31:51,647 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:31:51,647 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:31:51,647 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:31:51,649 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions [2019-12-18 15:31:51,649 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 15:31:51,688 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 15:31:51,688 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:51,692 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 15:31:51,699 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions [2019-12-18 15:31:51,730 INFO L126 PetriNetUnfolder]: 44/325 cut-off events. [2019-12-18 15:31:51,731 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:51,734 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 15:31:51,741 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2019-12-18 15:31:51,741 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:31:53,054 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 15:31:53,133 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2828 [2019-12-18 15:31:53,133 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-18 15:31:53,134 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions [2019-12-18 15:31:53,181 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2019-12-18 15:31:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2019-12-18 15:31:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 15:31:53,182 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:53,182 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 15:31:53,182 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:53,182 INFO L82 PathProgramCache]: Analyzing trace with hash 16813297, now seen corresponding path program 1 times [2019-12-18 15:31:53,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:53,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059786207] [2019-12-18 15:31:53,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:53,224 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 15:31:53,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059786207] [2019-12-18 15:31:53,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:53,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:53,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531964979] [2019-12-18 15:31:53,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:53,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:53,226 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2019-12-18 15:31:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:53,287 INFO L93 Difference]: Finished difference Result 1400 states and 4061 transitions. [2019-12-18 15:31:53,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:53,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 15:31:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:53,303 INFO L225 Difference]: With dead ends: 1400 [2019-12-18 15:31:53,303 INFO L226 Difference]: Without dead ends: 1149 [2019-12-18 15:31:53,304 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 15:31:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-12-18 15:31:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-12-18 15:31:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-12-18 15:31:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3360 transitions. [2019-12-18 15:31:53,381 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3360 transitions. Word has length 4 [2019-12-18 15:31:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:53,382 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3360 transitions. [2019-12-18 15:31:53,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3360 transitions. [2019-12-18 15:31:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 15:31:53,383 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:53,383 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 15:31:53,383 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash 521212778, now seen corresponding path program 1 times [2019-12-18 15:31:53,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:53,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363587472] [2019-12-18 15:31:53,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:53,437 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 15:31:53,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363587472] [2019-12-18 15:31:53,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:53,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:53,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440979296] [2019-12-18 15:31:53,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:53,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:53,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:53,441 INFO L87 Difference]: Start difference. First operand 1149 states and 3360 transitions. Second operand 3 states. [2019-12-18 15:31:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:53,474 INFO L93 Difference]: Finished difference Result 1149 states and 3359 transitions. [2019-12-18 15:31:53,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:53,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 15:31:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:53,482 INFO L225 Difference]: With dead ends: 1149 [2019-12-18 15:31:53,482 INFO L226 Difference]: Without dead ends: 1149 [2019-12-18 15:31:53,483 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 15:31:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2019-12-18 15:31:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2019-12-18 15:31:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1149 states. [2019-12-18 15:31:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3359 transitions. [2019-12-18 15:31:53,520 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3359 transitions. Word has length 5 [2019-12-18 15:31:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:53,520 INFO L462 AbstractCegarLoop]: Abstraction has 1149 states and 3359 transitions. [2019-12-18 15:31:53,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3359 transitions. [2019-12-18 15:31:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:31:53,521 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:53,521 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:53,521 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:53,522 INFO L82 PathProgramCache]: Analyzing trace with hash -353960300, now seen corresponding path program 1 times [2019-12-18 15:31:53,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:53,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711980708] [2019-12-18 15:31:53,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:53,581 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 15:31:53,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711980708] [2019-12-18 15:31:53,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:53,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:31:53,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486492927] [2019-12-18 15:31:53,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:31:53,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:53,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:31:53,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:31:53,584 INFO L87 Difference]: Start difference. First operand 1149 states and 3359 transitions. Second operand 4 states. [2019-12-18 15:31:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:53,637 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2019-12-18 15:31:53,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:31:53,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:31:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:53,646 INFO L225 Difference]: With dead ends: 1015 [2019-12-18 15:31:53,646 INFO L226 Difference]: Without dead ends: 1015 [2019-12-18 15:31:53,647 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 15:31:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-12-18 15:31:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2019-12-18 15:31:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-12-18 15:31:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2019-12-18 15:31:53,681 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 9 [2019-12-18 15:31:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:53,682 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2019-12-18 15:31:53,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:31:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2019-12-18 15:31:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 15:31:53,690 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:53,690 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2019-12-18 15:31:53,690 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash 880459202, now seen corresponding path program 1 times [2019-12-18 15:31:53,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:53,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311961019] [2019-12-18 15:31:53,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:53,756 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:31:53,757 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:31:53,757 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:31:53,757 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 15:31:53,764 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,764 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,765 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,765 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,765 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,765 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,765 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,766 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,767 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,767 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,767 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,767 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,767 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,767 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,768 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,768 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,768 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,768 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,768 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,768 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,769 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,769 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,769 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,769 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,769 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,770 WARN L315 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,770 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,771 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,771 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,772 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,772 WARN L315 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,772 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,773 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,773 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,773 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,774 WARN L315 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,774 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,775 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,775 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,775 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,776 WARN L315 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,776 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:53,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:31:53,780 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:31:53,780 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:31:53,780 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:31:53,780 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:31:53,781 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:31:53,781 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:31:53,781 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:31:53,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:31:53,782 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 87 transitions [2019-12-18 15:31:53,782 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 15:31:53,844 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 15:31:53,844 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:53,850 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 15:31:53,864 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions [2019-12-18 15:31:53,923 INFO L126 PetriNetUnfolder]: 90/608 cut-off events. [2019-12-18 15:31:53,923 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:53,927 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 15:31:53,941 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2019-12-18 15:31:53,941 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:31:55,107 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 15:31:55,254 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3986 [2019-12-18 15:31:55,255 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2019-12-18 15:31:55,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 33 transitions [2019-12-18 15:31:55,576 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2019-12-18 15:31:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2019-12-18 15:31:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 15:31:55,576 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:55,576 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 15:31:55,577 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:55,577 INFO L82 PathProgramCache]: Analyzing trace with hash 21615603, now seen corresponding path program 1 times [2019-12-18 15:31:55,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:55,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788149623] [2019-12-18 15:31:55,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:55,599 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 15:31:55,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788149623] [2019-12-18 15:31:55,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:55,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:55,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539019747] [2019-12-18 15:31:55,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:55,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:55,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:55,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:55,601 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2019-12-18 15:31:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:55,670 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2019-12-18 15:31:55,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:55,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 15:31:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:55,715 INFO L225 Difference]: With dead ends: 5482 [2019-12-18 15:31:55,715 INFO L226 Difference]: Without dead ends: 4856 [2019-12-18 15:31:55,715 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 15:31:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2019-12-18 15:31:55,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2019-12-18 15:31:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2019-12-18 15:31:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2019-12-18 15:31:55,907 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2019-12-18 15:31:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:55,908 INFO L462 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2019-12-18 15:31:55,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2019-12-18 15:31:55,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 15:31:55,908 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:55,908 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:55,908 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1297801215, now seen corresponding path program 1 times [2019-12-18 15:31:55,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:55,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20676394] [2019-12-18 15:31:55,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:55,927 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 15:31:55,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20676394] [2019-12-18 15:31:55,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:31:55,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:31:55,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801705315] [2019-12-18 15:31:55,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:31:55,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:55,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:31:55,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:31:55,930 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 3 states. [2019-12-18 15:31:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:55,975 INFO L93 Difference]: Finished difference Result 5481 states and 19553 transitions. [2019-12-18 15:31:55,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:31:55,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 15:31:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:56,021 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 15:31:56,021 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 15:31:56,022 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 15:31:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 15:31:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 15:31:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 15:31:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19553 transitions. [2019-12-18 15:31:56,295 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19553 transitions. Word has length 8 [2019-12-18 15:31:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:56,295 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19553 transitions. [2019-12-18 15:31:56,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:31:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19553 transitions. [2019-12-18 15:31:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:31:56,296 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:56,296 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:56,296 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1577131179, now seen corresponding path program 1 times [2019-12-18 15:31:56,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:56,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858235041] [2019-12-18 15:31:56,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 15:31:56,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858235041] [2019-12-18 15:31:56,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039497860] [2019-12-18 15:31:56,336 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 15:31:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:56,404 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 15:31:56,406 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:31:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 15:31:56,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:31:56,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 15:31:56,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647671076] [2019-12-18 15:31:56,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 15:31:56,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:56,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 15:31:56,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:31:56,441 INFO L87 Difference]: Start difference. First operand 5481 states and 19553 transitions. Second operand 6 states. [2019-12-18 15:31:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:56,507 INFO L93 Difference]: Finished difference Result 5481 states and 19549 transitions. [2019-12-18 15:31:56,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:31:56,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-12-18 15:31:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:56,529 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 15:31:56,530 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 15:31:56,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:31:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 15:31:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 15:31:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 15:31:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19549 transitions. [2019-12-18 15:31:56,700 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19549 transitions. Word has length 9 [2019-12-18 15:31:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:56,700 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19549 transitions. [2019-12-18 15:31:56,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 15:31:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19549 transitions. [2019-12-18 15:31:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 15:31:56,701 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:56,701 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:56,906 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:31:56,907 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1902302392, now seen corresponding path program 1 times [2019-12-18 15:31:56,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:56,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742562203] [2019-12-18 15:31:56,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 15:31:56,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742562203] [2019-12-18 15:31:56,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751185008] [2019-12-18 15:31:56,954 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 15:31:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:57,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 15:31:57,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:31:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 15:31:57,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:31:57,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 15:31:57,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579276052] [2019-12-18 15:31:57,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 15:31:57,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:57,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 15:31:57,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-18 15:31:57,048 INFO L87 Difference]: Start difference. First operand 5481 states and 19549 transitions. Second operand 8 states. [2019-12-18 15:31:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:57,207 INFO L93 Difference]: Finished difference Result 5481 states and 19533 transitions. [2019-12-18 15:31:57,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:31:57,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-18 15:31:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:57,230 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 15:31:57,230 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 15:31:57,231 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-12-18 15:31:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 15:31:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 15:31:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 15:31:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19533 transitions. [2019-12-18 15:31:57,393 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19533 transitions. Word has length 13 [2019-12-18 15:31:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:57,394 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19533 transitions. [2019-12-18 15:31:57,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 15:31:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19533 transitions. [2019-12-18 15:31:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-18 15:31:57,395 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:57,395 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:57,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:31:57,600 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash 654736636, now seen corresponding path program 1 times [2019-12-18 15:31:57,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:57,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273604455] [2019-12-18 15:31:57,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 15:31:57,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273604455] [2019-12-18 15:31:57,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703119215] [2019-12-18 15:31:57,648 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 15:31:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:31:57,710 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 15:31:57,711 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:31:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 15:31:57,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:31:57,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 15:31:57,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271091604] [2019-12-18 15:31:57,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 15:31:57,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:31:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 15:31:57,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-18 15:31:57,755 INFO L87 Difference]: Start difference. First operand 5481 states and 19533 transitions. Second operand 10 states. [2019-12-18 15:31:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:31:57,833 INFO L93 Difference]: Finished difference Result 5481 states and 19469 transitions. [2019-12-18 15:31:57,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 15:31:57,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-12-18 15:31:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:31:57,854 INFO L225 Difference]: With dead ends: 5481 [2019-12-18 15:31:57,854 INFO L226 Difference]: Without dead ends: 5481 [2019-12-18 15:31:57,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2019-12-18 15:31:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2019-12-18 15:31:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2019-12-18 15:31:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5481 states. [2019-12-18 15:31:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 19469 transitions. [2019-12-18 15:31:58,010 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 19469 transitions. Word has length 17 [2019-12-18 15:31:58,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:31:58,011 INFO L462 AbstractCegarLoop]: Abstraction has 5481 states and 19469 transitions. [2019-12-18 15:31:58,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 15:31:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 19469 transitions. [2019-12-18 15:31:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 15:31:58,013 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:31:58,013 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 15:31:58,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:31:58,217 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:31:58,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:31:58,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1144536387, now seen corresponding path program 1 times [2019-12-18 15:31:58,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:31:58,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954479333] [2019-12-18 15:31:58,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:31:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:31:58,257 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:31:58,258 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:31:58,259 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:31:58,259 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 15:31:58,270 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,270 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,270 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,271 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,271 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,271 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,271 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,271 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,271 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,272 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,272 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,272 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,272 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,272 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,272 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,273 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,273 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,273 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,273 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,273 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,273 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,275 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,275 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,275 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,275 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,276 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,276 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,276 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,276 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,276 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,276 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,277 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,277 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,277 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,277 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,278 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,279 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,279 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,279 WARN L315 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,279 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,280 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,281 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,281 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,281 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,281 WARN L315 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,282 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,282 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,283 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,283 WARN L315 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,283 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,285 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,285 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,285 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,286 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,286 WARN L315 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,287 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,287 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,288 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,288 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,288 WARN L315 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:31:58,294 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:31:58,294 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:31:58,294 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:31:58,294 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:31:58,294 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:31:58,295 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:31:58,295 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:31:58,295 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:31:58,295 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:31:58,296 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions [2019-12-18 15:31:58,297 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 15:31:58,517 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 15:31:58,517 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:58,527 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 15:31:58,557 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions [2019-12-18 15:31:58,719 INFO L126 PetriNetUnfolder]: 188/1167 cut-off events. [2019-12-18 15:31:58,719 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:31:58,729 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 15:31:58,752 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2019-12-18 15:31:58,752 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:31:59,762 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2019-12-18 15:31:59,927 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-12-18 15:32:00,133 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-12-18 15:32:00,259 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6149 [2019-12-18 15:32:00,259 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2019-12-18 15:32:00,259 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 38 transitions [2019-12-18 15:32:02,392 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2019-12-18 15:32:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2019-12-18 15:32:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 15:32:02,392 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:02,392 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 15:32:02,392 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash 26696947, now seen corresponding path program 1 times [2019-12-18 15:32:02,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:02,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488518029] [2019-12-18 15:32:02,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:02,414 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 15:32:02,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488518029] [2019-12-18 15:32:02,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:32:02,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:32:02,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967369237] [2019-12-18 15:32:02,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:32:02,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:02,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:32:02,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:32:02,416 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2019-12-18 15:32:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:32:02,901 INFO L93 Difference]: Finished difference Result 32560 states and 135677 transitions. [2019-12-18 15:32:02,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:32:02,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 15:32:02,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:32:03,079 INFO L225 Difference]: With dead ends: 32560 [2019-12-18 15:32:03,079 INFO L226 Difference]: Without dead ends: 26309 [2019-12-18 15:32:03,079 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 15:32:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2019-12-18 15:32:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2019-12-18 15:32:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2019-12-18 15:32:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110676 transitions. [2019-12-18 15:32:05,256 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110676 transitions. Word has length 4 [2019-12-18 15:32:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:32:05,257 INFO L462 AbstractCegarLoop]: Abstraction has 26309 states and 110676 transitions. [2019-12-18 15:32:05,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:32:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110676 transitions. [2019-12-18 15:32:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 15:32:05,257 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:05,257 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 15:32:05,257 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:05,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:05,258 INFO L82 PathProgramCache]: Analyzing trace with hash 827606282, now seen corresponding path program 1 times [2019-12-18 15:32:05,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:05,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050621713] [2019-12-18 15:32:05,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:05,281 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 15:32:05,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050621713] [2019-12-18 15:32:05,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:32:05,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:32:05,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257008330] [2019-12-18 15:32:05,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:32:05,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:32:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:32:05,283 INFO L87 Difference]: Start difference. First operand 26309 states and 110676 transitions. Second operand 3 states. [2019-12-18 15:32:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:32:05,441 INFO L93 Difference]: Finished difference Result 26309 states and 110675 transitions. [2019-12-18 15:32:05,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:32:05,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 15:32:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:32:05,543 INFO L225 Difference]: With dead ends: 26309 [2019-12-18 15:32:05,544 INFO L226 Difference]: Without dead ends: 26309 [2019-12-18 15:32:05,544 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 15:32:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2019-12-18 15:32:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2019-12-18 15:32:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26309 states. [2019-12-18 15:32:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 110675 transitions. [2019-12-18 15:32:06,871 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 110675 transitions. Word has length 5 [2019-12-18 15:32:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:32:06,871 INFO L462 AbstractCegarLoop]: Abstraction has 26309 states and 110675 transitions. [2019-12-18 15:32:06,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:32:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 110675 transitions. [2019-12-18 15:32:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:32:06,872 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:06,872 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:32:06,872 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1295838944, now seen corresponding path program 1 times [2019-12-18 15:32:06,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:06,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162203677] [2019-12-18 15:32:06,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:06,919 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 15:32:06,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162203677] [2019-12-18 15:32:06,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:32:06,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:32:06,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394233756] [2019-12-18 15:32:06,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:32:06,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:06,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:32:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:32:06,922 INFO L87 Difference]: Start difference. First operand 26309 states and 110675 transitions. Second operand 4 states. [2019-12-18 15:32:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:32:07,084 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2019-12-18 15:32:07,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:32:07,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:32:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:32:07,152 INFO L225 Difference]: With dead ends: 24543 [2019-12-18 15:32:07,152 INFO L226 Difference]: Without dead ends: 24543 [2019-12-18 15:32:07,155 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 15:32:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2019-12-18 15:32:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2019-12-18 15:32:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2019-12-18 15:32:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2019-12-18 15:32:09,188 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 9 [2019-12-18 15:32:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:32:09,189 INFO L462 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2019-12-18 15:32:09,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:32:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2019-12-18 15:32:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 15:32:09,190 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:09,190 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:32:09,190 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1647353871, now seen corresponding path program 1 times [2019-12-18 15:32:09,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:09,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626227859] [2019-12-18 15:32:09,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:09,234 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 15:32:09,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626227859] [2019-12-18 15:32:09,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692668073] [2019-12-18 15:32:09,235 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 15:32:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:09,294 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 15:32:09,296 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:32:09,317 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 15:32:09,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:32:09,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 15:32:09,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361654] [2019-12-18 15:32:09,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 15:32:09,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:09,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 15:32:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:32:09,319 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 6 states. [2019-12-18 15:32:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:32:09,481 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2019-12-18 15:32:09,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:32:09,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 15:32:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:32:09,541 INFO L225 Difference]: With dead ends: 23573 [2019-12-18 15:32:09,542 INFO L226 Difference]: Without dead ends: 23573 [2019-12-18 15:32:09,542 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 15:32:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2019-12-18 15:32:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2019-12-18 15:32:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2019-12-18 15:32:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2019-12-18 15:32:10,349 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2019-12-18 15:32:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:32:10,349 INFO L462 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2019-12-18 15:32:10,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 15:32:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2019-12-18 15:32:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 15:32:10,352 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:10,352 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 15:32:10,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:32:10,556 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:10,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1700547162, now seen corresponding path program 1 times [2019-12-18 15:32:10,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:10,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060540717] [2019-12-18 15:32:10,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:10,599 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 15:32:10,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060540717] [2019-12-18 15:32:10,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350165424] [2019-12-18 15:32:10,600 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 15:32:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:10,655 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 15:32:10,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:32:10,686 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 15:32:10,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:32:10,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 15:32:10,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38922676] [2019-12-18 15:32:10,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 15:32:10,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:10,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 15:32:10,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 15:32:10,688 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2019-12-18 15:32:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:32:10,812 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2019-12-18 15:32:10,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:32:10,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 15:32:10,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:32:10,865 INFO L225 Difference]: With dead ends: 23557 [2019-12-18 15:32:10,865 INFO L226 Difference]: Without dead ends: 23557 [2019-12-18 15:32:10,865 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 15:32:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2019-12-18 15:32:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2019-12-18 15:32:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2019-12-18 15:32:11,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2019-12-18 15:32:11,735 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2019-12-18 15:32:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:32:11,736 INFO L462 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2019-12-18 15:32:11,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 15:32:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2019-12-18 15:32:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-18 15:32:11,742 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:11,742 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:32:11,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:32:11,946 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:11,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1187474448, now seen corresponding path program 1 times [2019-12-18 15:32:11,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:11,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282184412] [2019-12-18 15:32:11,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:32:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:32:11,982 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:32:11,982 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:32:11,982 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:32:11,982 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 15:32:11,996 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,996 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,997 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,998 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:11,999 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,000 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,001 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,001 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,001 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,001 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,001 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,001 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,003 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,003 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,003 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,003 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,003 WARN L315 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,015 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,015 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,015 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,016 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,016 WARN L315 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,017 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,017 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,017 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,018 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,018 WARN L315 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,019 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,019 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,020 WARN L315 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,020 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,020 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,021 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,021 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,021 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,021 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,022 WARN L315 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,024 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,024 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,024 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,024 WARN L315 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,024 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:32:12,030 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:32:12,030 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:32:12,031 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:32:12,031 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:32:12,031 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:32:12,031 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:32:12,031 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:32:12,031 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:32:12,031 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:32:12,032 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 101 transitions [2019-12-18 15:32:12,033 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 15:32:12,381 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 15:32:12,381 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:32:12,407 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 15:32:12,464 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 103 places, 101 transitions [2019-12-18 15:32:12,798 INFO L126 PetriNetUnfolder]: 398/2286 cut-off events. [2019-12-18 15:32:12,798 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:32:12,823 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 15:32:12,876 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2019-12-18 15:32:12,876 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:32:13,463 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-12-18 15:32:14,618 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 15:32:14,699 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7553 [2019-12-18 15:32:14,700 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 15:32:14,700 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 43 transitions [2019-12-18 15:32:42,691 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2019-12-18 15:32:42,692 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2019-12-18 15:32:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-18 15:32:42,692 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:42,692 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-18 15:32:42,692 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:42,693 INFO L82 PathProgramCache]: Analyzing trace with hash 32083310, now seen corresponding path program 1 times [2019-12-18 15:32:42,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:42,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98715267] [2019-12-18 15:32:42,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:42,721 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 15:32:42,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98715267] [2019-12-18 15:32:42,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:32:42,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:32:42,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057475746] [2019-12-18 15:32:42,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:32:42,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:32:42,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:32:42,723 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2019-12-18 15:32:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:32:44,114 INFO L93 Difference]: Finished difference Result 158372 states and 759149 transitions. [2019-12-18 15:32:44,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:32:44,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-18 15:32:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:32:44,566 INFO L225 Difference]: With dead ends: 158372 [2019-12-18 15:32:44,566 INFO L226 Difference]: Without dead ends: 127121 [2019-12-18 15:32:44,566 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 15:32:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2019-12-18 15:32:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2019-12-18 15:32:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2019-12-18 15:32:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615398 transitions. [2019-12-18 15:32:59,546 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615398 transitions. Word has length 4 [2019-12-18 15:32:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:32:59,547 INFO L462 AbstractCegarLoop]: Abstraction has 127121 states and 615398 transitions. [2019-12-18 15:32:59,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:32:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615398 transitions. [2019-12-18 15:32:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 15:32:59,547 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:32:59,547 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 15:32:59,548 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:32:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:32:59,548 INFO L82 PathProgramCache]: Analyzing trace with hash 994583493, now seen corresponding path program 1 times [2019-12-18 15:32:59,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:32:59,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311792627] [2019-12-18 15:32:59,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:32:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:32:59,574 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 15:32:59,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311792627] [2019-12-18 15:32:59,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:32:59,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:32:59,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417846078] [2019-12-18 15:32:59,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:32:59,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:32:59,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:32:59,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:32:59,576 INFO L87 Difference]: Start difference. First operand 127121 states and 615398 transitions. Second operand 3 states. [2019-12-18 15:33:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:33:00,250 INFO L93 Difference]: Finished difference Result 127121 states and 615397 transitions. [2019-12-18 15:33:00,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:33:00,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-18 15:33:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:33:00,655 INFO L225 Difference]: With dead ends: 127121 [2019-12-18 15:33:00,655 INFO L226 Difference]: Without dead ends: 127121 [2019-12-18 15:33:00,656 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 15:33:09,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2019-12-18 15:33:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 127121. [2019-12-18 15:33:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127121 states. [2019-12-18 15:33:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127121 states to 127121 states and 615397 transitions. [2019-12-18 15:33:12,317 INFO L78 Accepts]: Start accepts. Automaton has 127121 states and 615397 transitions. Word has length 5 [2019-12-18 15:33:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:33:12,317 INFO L462 AbstractCegarLoop]: Abstraction has 127121 states and 615397 transitions. [2019-12-18 15:33:12,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:33:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 127121 states and 615397 transitions. [2019-12-18 15:33:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:33:12,318 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:33:12,318 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:33:12,318 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:33:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:33:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1024609292, now seen corresponding path program 1 times [2019-12-18 15:33:12,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:33:12,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240802345] [2019-12-18 15:33:12,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:33:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:12,339 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 15:33:12,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240802345] [2019-12-18 15:33:12,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:33:12,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:33:12,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819682200] [2019-12-18 15:33:12,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:33:12,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:33:12,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:33:12,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:33:12,341 INFO L87 Difference]: Start difference. First operand 127121 states and 615397 transitions. Second operand 4 states. [2019-12-18 15:33:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:33:14,203 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2019-12-18 15:33:14,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:33:14,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:33:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:33:14,601 INFO L225 Difference]: With dead ends: 120747 [2019-12-18 15:33:14,601 INFO L226 Difference]: Without dead ends: 120747 [2019-12-18 15:33:14,601 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 15:33:23,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2019-12-18 15:33:24,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2019-12-18 15:33:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2019-12-18 15:33:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2019-12-18 15:33:25,178 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 9 [2019-12-18 15:33:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:33:25,178 INFO L462 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2019-12-18 15:33:25,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:33:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2019-12-18 15:33:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 15:33:25,179 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:33:25,179 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:33:25,179 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:33:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:33:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash 579549320, now seen corresponding path program 1 times [2019-12-18 15:33:25,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:33:25,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620464373] [2019-12-18 15:33:25,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:33:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:25,233 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 15:33:25,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620464373] [2019-12-18 15:33:25,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473090979] [2019-12-18 15:33:25,234 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 15:33:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:26,158 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-18 15:33:26,158 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:33:26,174 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 15:33:26,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:33:26,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2019-12-18 15:33:26,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594375284] [2019-12-18 15:33:26,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 15:33:26,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:33:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 15:33:26,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-18 15:33:26,176 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 6 states. [2019-12-18 15:33:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:33:26,778 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2019-12-18 15:33:26,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:33:26,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-18 15:33:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:33:27,129 INFO L225 Difference]: With dead ends: 116193 [2019-12-18 15:33:27,129 INFO L226 Difference]: Without dead ends: 116193 [2019-12-18 15:33:27,130 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 15:33:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2019-12-18 15:33:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2019-12-18 15:33:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2019-12-18 15:33:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2019-12-18 15:33:37,566 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2019-12-18 15:33:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:33:37,566 INFO L462 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2019-12-18 15:33:37,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 15:33:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2019-12-18 15:33:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 15:33:37,568 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:33:37,568 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 15:33:37,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:33:37,772 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:33:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:33:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1298529040, now seen corresponding path program 1 times [2019-12-18 15:33:37,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:33:37,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194905013] [2019-12-18 15:33:37,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:33:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:37,823 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 15:33:37,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194905013] [2019-12-18 15:33:37,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257436567] [2019-12-18 15:33:37,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:33:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:37,886 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-18 15:33:37,887 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:33:37,912 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 15:33:37,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:33:37,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-12-18 15:33:37,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823786747] [2019-12-18 15:33:37,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-18 15:33:37,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:33:37,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-18 15:33:37,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-12-18 15:33:37,914 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2019-12-18 15:33:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:33:38,517 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2019-12-18 15:33:38,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:33:38,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-12-18 15:33:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:33:44,003 INFO L225 Difference]: With dead ends: 116177 [2019-12-18 15:33:44,003 INFO L226 Difference]: Without dead ends: 116177 [2019-12-18 15:33:44,004 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 15:33:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2019-12-18 15:33:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2019-12-18 15:33:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2019-12-18 15:33:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2019-12-18 15:33:48,720 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2019-12-18 15:33:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:33:48,721 INFO L462 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2019-12-18 15:33:48,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-18 15:33:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2019-12-18 15:33:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 15:33:48,728 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:33:48,728 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 15:33:48,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:33:48,931 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:33:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:33:48,931 INFO L82 PathProgramCache]: Analyzing trace with hash -982455207, now seen corresponding path program 1 times [2019-12-18 15:33:48,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:33:48,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109858013] [2019-12-18 15:33:48,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:33:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:49,004 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 15:33:49,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109858013] [2019-12-18 15:33:49,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89342087] [2019-12-18 15:33:49,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:33:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:33:49,077 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-18 15:33:49,081 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:33:49,130 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 15:33:49,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:33:49,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-12-18 15:33:49,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377916211] [2019-12-18 15:33:49,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-18 15:33:49,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:33:49,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-18 15:33:49,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2019-12-18 15:33:49,133 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2019-12-18 15:33:50,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:33:50,807 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2019-12-18 15:33:50,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 15:33:50,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-12-18 15:33:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:33:51,182 INFO L225 Difference]: With dead ends: 116113 [2019-12-18 15:33:51,182 INFO L226 Difference]: Without dead ends: 116113 [2019-12-18 15:33:51,183 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 15:33:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2019-12-18 15:34:00,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2019-12-18 15:34:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2019-12-18 15:34:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2019-12-18 15:34:01,742 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2019-12-18 15:34:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:34:01,742 INFO L462 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2019-12-18 15:34:01,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-18 15:34:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2019-12-18 15:34:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-18 15:34:01,758 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:34:01,758 INFO L411 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:34:01,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:34:01,961 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:34:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:34:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1095808649, now seen corresponding path program 1 times [2019-12-18 15:34:01,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:34:01,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392523600] [2019-12-18 15:34:01,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:34:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:34:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:34:01,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:34:01,989 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:34:01,990 WARN L364 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:34:01,990 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2019-12-18 15:34:01,999 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:01,999 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:01,999 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:01,999 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,000 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,001 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,002 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,003 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,004 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,005 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,005 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,005 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,005 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,005 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,005 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,006 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,006 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,006 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,006 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,006 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,007 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,007 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,007 WARN L315 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,007 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,008 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,008 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,008 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,009 WARN L315 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,009 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,010 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,010 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,010 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,010 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,010 WARN L315 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,011 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,011 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,012 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,012 WARN L315 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,012 WARN L315 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,013 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,013 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,013 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,013 WARN L315 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,014 WARN L315 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,015 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,015 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,015 WARN L315 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,015 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,015 WARN L315 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,016 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,016 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,016 WARN L315 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,017 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,017 WARN L315 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:34:02,022 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-18 15:34:02,023 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:34:02,023 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:34:02,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:34:02,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:34:02,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:34:02,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:34:02,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:34:02,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:34:02,025 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 108 transitions [2019-12-18 15:34:02,025 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 15:34:02,935 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 15:34:02,935 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:34:02,986 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 15:34:03,104 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions [2019-12-18 15:34:03,752 INFO L126 PetriNetUnfolder]: 848/4541 cut-off events. [2019-12-18 15:34:03,753 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:34:03,794 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 15:34:04,638 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2019-12-18 15:34:04,639 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:34:06,266 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2019-12-18 15:34:06,346 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11010 [2019-12-18 15:34:06,347 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2019-12-18 15:34:06,347 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 48 transitions Received shutdown request... [2019-12-18 15:35:25,609 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 15:35:25,612 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 15:35:25,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 03:35:25 BasicIcfg [2019-12-18 15:35:25,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 15:35:25,614 INFO L168 Benchmark]: Toolchain (without parser) took 219450.49 ms. Allocated memory was 146.8 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 103.5 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,614 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 123.2 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.55 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.3 MB in the beginning and 163.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.98 ms. Allocated memory is still 203.9 MB. Free memory was 163.5 MB in the beginning and 160.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,616 INFO L168 Benchmark]: Boogie Preprocessor took 42.30 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,616 INFO L168 Benchmark]: RCFGBuilder took 471.62 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 137.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,617 INFO L168 Benchmark]: TraceAbstraction took 218239.19 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 137.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2019-12-18 15:35:25,619 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 123.2 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.55 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.3 MB in the beginning and 163.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.98 ms. Allocated memory is still 203.9 MB. Free memory was 163.5 MB in the beginning and 160.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.30 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.62 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 137.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218239.19 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 137.1 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 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, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 289 CheckedPairsTotal, 56 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 71 ProgramPointsBefore, 24 ProgramPointsAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 4 ChoiceCompositions, 457 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 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, 760 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 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, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 3986 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 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, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 6149 CheckedPairsTotal, 60 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 103 ProgramPointsBefore, 48 ProgramPointsAfterwards, 101 TransitionsBefore, 43 TransitionsAfterwards, 3660 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 1751 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 7553 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.3s, 111 ProgramPointsBefore, 54 ProgramPointsAfterwards, 108 TransitionsBefore, 48 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2261 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 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 220530 states. Currently 33483 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 60 locations, 1 error locations. Result: TIMEOUT, OverallTime: 83.5s, 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