/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:40:50,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:40:50,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:40:50,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:40:50,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:40:50,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:40:50,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:40:50,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:40:50,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:40:50,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:40:50,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:40:50,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:40:50,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:40:50,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:40:50,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:40:50,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:40:50,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:40:50,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:40:50,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:40:50,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:40:50,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:40:50,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:40:50,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:40:50,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:40:50,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:40:50,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:40:50,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:40:50,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:40:50,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:40:50,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:40:50,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:40:50,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:40:50,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:40:50,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:40:50,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:40:50,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:40:50,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:40:50,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:40:50,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:40:50,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:40:50,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:40:50,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 07:40:50,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:40:50,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:40:50,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:40:50,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:40:50,067 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:40:50,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:40:50,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:40:50,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:40:50,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:40:50,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:40:50,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:40:50,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:40:50,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:40:50,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:40:50,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:40:50,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:40:50,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:40:50,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:40:50,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:40:50,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:40:50,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:40:50,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:40:50,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:40:50,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:40:50,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:40:50,071 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 07:40:50,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:40:50,072 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 07:40:50,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:40:50,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:40:50,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:40:50,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:40:50,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:40:50,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:40:50,388 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:40:50,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i [2020-04-18 07:40:50,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e013d902f/ec74cf5f02cf493baa75fab6c06b870e/FLAG4483221b2 [2020-04-18 07:40:50,928 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:40:50,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i [2020-04-18 07:40:50,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e013d902f/ec74cf5f02cf493baa75fab6c06b870e/FLAG4483221b2 [2020-04-18 07:40:51,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e013d902f/ec74cf5f02cf493baa75fab6c06b870e [2020-04-18 07:40:51,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:40:51,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:40:51,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:40:51,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:40:51,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:40:51,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1579abd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:51, skipping insertion in model container [2020-04-18 07:40:51,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:40:51" (1/1) ... [2020-04-18 07:40:51,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:40:51,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:40:51,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:40:51,914 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:40:51,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:40:52,065 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:40:52,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52 WrapperNode [2020-04-18 07:40:52,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:40:52,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:40:52,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:40:52,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:40:52,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:40:52,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:40:52,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:40:52,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:40:52,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (1/1) ... [2020-04-18 07:40:52,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:40:52,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:40:52,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:40:52,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:40:52,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (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 [2020-04-18 07:40:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:40:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:40:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:40:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:40:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:40:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:40:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:40:52,221 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 07:40:52,696 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:40:52,696 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-04-18 07:40:52,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:52 BoogieIcfgContainer [2020-04-18 07:40:52,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:40:52,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:40:52,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:40:52,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:40:52,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:40:51" (1/3) ... [2020-04-18 07:40:52,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40978896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:52, skipping insertion in model container [2020-04-18 07:40:52,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:40:52" (2/3) ... [2020-04-18 07:40:52,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40978896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:40:52, skipping insertion in model container [2020-04-18 07:40:52,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:40:52" (3/3) ... [2020-04-18 07:40:52,709 INFO L109 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2020-04-18 07:40:52,720 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:40:52,721 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:40:52,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 07:40:52,730 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:40:52,751 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,751 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,751 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,752 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,752 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,752 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,753 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,753 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,754 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,754 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,757 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,758 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,758 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,758 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,759 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,759 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:52,774 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 07:40:52,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:52,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:52,792 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:52,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:52,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:52,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:52,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:52,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:52,803 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 30 transitions, 65 flow [2020-04-18 07:40:52,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 65 flow [2020-04-18 07:40:52,831 INFO L129 PetriNetUnfolder]: 3/38 cut-off events. [2020-04-18 07:40:52,832 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:40:52,836 INFO L80 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2020-04-18 07:40:52,838 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 65 flow [2020-04-18 07:40:52,848 INFO L129 PetriNetUnfolder]: 3/38 cut-off events. [2020-04-18 07:40:52,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 07:40:52,849 INFO L80 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2020-04-18 07:40:52,850 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 220 [2020-04-18 07:40:52,851 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:53,510 INFO L206 etLargeBlockEncoding]: Checked pairs total: 164 [2020-04-18 07:40:53,511 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-04-18 07:40:53,515 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-04-18 07:40:53,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-04-18 07:40:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 07:40:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:40:53,535 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:53,536 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 07:40:53,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 6233835, now seen corresponding path program 1 times [2020-04-18 07:40:53,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:53,552 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [702451423] [2020-04-18 07:40:53,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:53,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:40:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 07:40:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 07:40:53,585 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash 6233835, now seen corresponding path program 2 times [2020-04-18 07:40:53,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:53,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564851275] [2020-04-18 07:40:53,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:53,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564851275] [2020-04-18 07:40:53,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:53,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 07:40:53,815 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:53,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:53,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 07:40:53,818 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:53,823 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:40:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:40:53,832 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 2 states. [2020-04-18 07:40:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:53,837 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 07:40:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 07:40:53,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:53,839 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [702451423] [2020-04-18 07:40:53,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:53,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 07:40:53,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [702451423] [2020-04-18 07:40:53,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 07:40:53,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:53,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 07:40:53,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:40:53,850 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-04-18 07:40:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:53,853 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-04-18 07:40:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 07:40:53,854 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-04-18 07:40:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:53,866 INFO L225 Difference]: With dead ends: 11 [2020-04-18 07:40:53,866 INFO L226 Difference]: Without dead ends: 11 [2020-04-18 07:40:53,867 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 07:40:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-04-18 07:40:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-04-18 07:40:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-04-18 07:40:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-04-18 07:40:53,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-04-18 07:40:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:53,898 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-04-18 07:40:53,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 07:40:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-04-18 07:40:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:40:53,899 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:53,899 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-04-18 07:40:53,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1695702247, now seen corresponding path program 1 times [2020-04-18 07:40:53,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:53,901 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1953939472] [2020-04-18 07:40:53,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:53,903 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 07:40:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 07:40:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 07:40:53,904 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:53,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:53,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1695702247, now seen corresponding path program 2 times [2020-04-18 07:40:53,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:53,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178825354] [2020-04-18 07:40:53,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:53,959 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:40:53,960 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:40:53,960 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:40:53,961 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:40:53,962 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 07:40:53,969 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,970 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,970 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,970 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,971 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,971 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,978 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,978 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,978 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,978 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,980 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,980 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,981 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,982 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,982 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,982 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,983 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,983 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,983 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,983 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,984 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,984 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,984 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,985 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,985 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,985 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,988 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,988 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,988 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,988 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,989 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,989 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:53,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 07:40:53,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:53,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:53,992 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:53,992 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:53,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:53,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:53,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:53,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:53,998 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 42 transitions, 96 flow [2020-04-18 07:40:53,998 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 96 flow [2020-04-18 07:40:54,024 INFO L129 PetriNetUnfolder]: 5/59 cut-off events. [2020-04-18 07:40:54,025 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 07:40:54,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 5/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2020-04-18 07:40:54,030 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 96 flow [2020-04-18 07:40:54,042 INFO L129 PetriNetUnfolder]: 5/59 cut-off events. [2020-04-18 07:40:54,043 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 07:40:54,044 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 5/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2020-04-18 07:40:54,045 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 704 [2020-04-18 07:40:54,045 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:54,835 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2176 [2020-04-18 07:40:54,835 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-04-18 07:40:54,836 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 20 transitions, 52 flow [2020-04-18 07:40:54,853 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 277 states. [2020-04-18 07:40:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states. [2020-04-18 07:40:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:54,854 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:54,855 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:54,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash -964375231, now seen corresponding path program 1 times [2020-04-18 07:40:54,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:54,856 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [397568354] [2020-04-18 07:40:54,856 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:54,857 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:40:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:54,858 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash -964375231, now seen corresponding path program 2 times [2020-04-18 07:40:54,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:54,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291095263] [2020-04-18 07:40:54,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:54,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291095263] [2020-04-18 07:40:54,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:54,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:40:54,908 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:54,909 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:54,910 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:54,911 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:54,914 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:54,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:54,915 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-04-18 07:40:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:54,921 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:40:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:40:54,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:54,922 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [397568354] [2020-04-18 07:40:54,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:54,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:40:54,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [397568354] [2020-04-18 07:40:54,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:40:54,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:54,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:54,924 INFO L87 Difference]: Start difference. First operand 277 states. Second operand 3 states. [2020-04-18 07:40:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:54,958 INFO L93 Difference]: Finished difference Result 221 states and 498 transitions. [2020-04-18 07:40:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:40:54,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 07:40:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:54,966 INFO L225 Difference]: With dead ends: 221 [2020-04-18 07:40:54,966 INFO L226 Difference]: Without dead ends: 221 [2020-04-18 07:40:54,967 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-04-18 07:40:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2020-04-18 07:40:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-04-18 07:40:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 462 transitions. [2020-04-18 07:40:55,014 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 462 transitions. Word has length 7 [2020-04-18 07:40:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:55,014 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 462 transitions. [2020-04-18 07:40:55,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:40:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 462 transitions. [2020-04-18 07:40:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:55,015 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:55,015 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-04-18 07:40:55,016 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash -572435765, now seen corresponding path program 1 times [2020-04-18 07:40:55,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:55,017 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [905339754] [2020-04-18 07:40:55,017 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:55,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 07:40:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 07:40:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 07:40:55,019 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:55,019 INFO L82 PathProgramCache]: Analyzing trace with hash -572435765, now seen corresponding path program 2 times [2020-04-18 07:40:55,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:55,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551292268] [2020-04-18 07:40:55,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:55,065 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:40:55,065 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:40:55,065 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:40:55,066 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:40:55,068 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 07:40:55,074 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,074 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,074 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,074 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,075 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,075 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,075 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,075 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,075 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,076 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,076 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,076 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,076 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,076 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,077 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,077 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,077 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,077 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,078 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,078 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,079 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,079 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,080 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,080 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,081 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,081 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,082 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,083 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,083 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,084 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,086 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,086 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:55,088 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 07:40:55,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:55,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:55,088 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:55,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:55,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:55,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:55,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:55,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:55,091 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 54 transitions, 129 flow [2020-04-18 07:40:55,091 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 129 flow [2020-04-18 07:40:55,105 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-04-18 07:40:55,105 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 07:40:55,106 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 80 events. 7/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2020-04-18 07:40:55,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 129 flow [2020-04-18 07:40:55,131 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-04-18 07:40:55,131 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 07:40:55,133 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 80 events. 7/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2020-04-18 07:40:55,136 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1452 [2020-04-18 07:40:55,136 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:56,087 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5365 [2020-04-18 07:40:56,087 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2020-04-18 07:40:56,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 28 transitions, 77 flow [2020-04-18 07:40:56,182 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1943 states. [2020-04-18 07:40:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states. [2020-04-18 07:40:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:56,183 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:56,183 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:56,183 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:56,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1516561329, now seen corresponding path program 1 times [2020-04-18 07:40:56,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:56,184 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [510666879] [2020-04-18 07:40:56,185 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,185 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:40:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:56,186 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1516561329, now seen corresponding path program 2 times [2020-04-18 07:40:56,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:56,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824010469] [2020-04-18 07:40:56,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:56,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824010469] [2020-04-18 07:40:56,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:56,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:40:56,222 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:56,222 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,223 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:56,223 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:56,226 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:56,227 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-04-18 07:40:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,230 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:40:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:40:56,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:56,231 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [510666879] [2020-04-18 07:40:56,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:56,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:40:56,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [510666879] [2020-04-18 07:40:56,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:40:56,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:56,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:56,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:56,232 INFO L87 Difference]: Start difference. First operand 1943 states. Second operand 3 states. [2020-04-18 07:40:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,325 INFO L93 Difference]: Finished difference Result 1827 states and 5490 transitions. [2020-04-18 07:40:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:40:56,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 07:40:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:56,346 INFO L225 Difference]: With dead ends: 1827 [2020-04-18 07:40:56,346 INFO L226 Difference]: Without dead ends: 1827 [2020-04-18 07:40:56,346 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-04-18 07:40:56,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1599. [2020-04-18 07:40:56,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-04-18 07:40:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 4830 transitions. [2020-04-18 07:40:56,474 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 4830 transitions. Word has length 7 [2020-04-18 07:40:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:56,474 INFO L479 AbstractCegarLoop]: Abstraction has 1599 states and 4830 transitions. [2020-04-18 07:40:56,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:40:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 4830 transitions. [2020-04-18 07:40:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:40:56,478 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:56,478 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:56,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:56,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash 92494626, now seen corresponding path program 1 times [2020-04-18 07:40:56,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:56,480 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1425832691] [2020-04-18 07:40:56,481 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 40 transitions. [2020-04-18 07:40:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-04-18 07:40:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:40:56,487 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash 92495766, now seen corresponding path program 2 times [2020-04-18 07:40:56,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:56,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131944964] [2020-04-18 07:40:56,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:56,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131944964] [2020-04-18 07:40:56,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:56,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:40:56,565 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:56,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,568 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-04-18 07:40:56,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:56,580 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:40:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:56,581 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-04-18 07:40:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,584 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2020-04-18 07:40:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2020-04-18 07:40:56,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:56,585 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1425832691] [2020-04-18 07:40:56,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:56,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:40:56,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1425832691] [2020-04-18 07:40:56,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:40:56,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:56,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:56,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:56,588 INFO L87 Difference]: Start difference. First operand 1599 states and 4830 transitions. Second operand 3 states. [2020-04-18 07:40:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:56,612 INFO L93 Difference]: Finished difference Result 305 states and 564 transitions. [2020-04-18 07:40:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:40:56,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 07:40:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:56,615 INFO L225 Difference]: With dead ends: 305 [2020-04-18 07:40:56,615 INFO L226 Difference]: Without dead ends: 305 [2020-04-18 07:40:56,615 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-04-18 07:40:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2020-04-18 07:40:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-04-18 07:40:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 564 transitions. [2020-04-18 07:40:56,624 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 564 transitions. Word has length 12 [2020-04-18 07:40:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:40:56,624 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 564 transitions. [2020-04-18 07:40:56,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:40:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 564 transitions. [2020-04-18 07:40:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:40:56,625 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:56,625 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-04-18 07:40:56,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:40:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash -106334423, now seen corresponding path program 1 times [2020-04-18 07:40:56,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:56,627 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1073208082] [2020-04-18 07:40:56,627 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:56,627 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 07:40:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-04-18 07:40:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:40:56,628 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash -106334423, now seen corresponding path program 2 times [2020-04-18 07:40:56,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:56,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824712243] [2020-04-18 07:40:56,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:40:56,657 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:40:56,657 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:40:56,657 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:40:56,658 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:40:56,658 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 07:40:56,665 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,665 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,665 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,665 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,666 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,666 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,666 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,667 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,667 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,667 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,668 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,668 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,669 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,669 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,671 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,672 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,673 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,673 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,673 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,673 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,673 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,674 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,675 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,675 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,675 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,676 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,676 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,676 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,677 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,678 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,678 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,678 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,678 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,678 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,679 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,680 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,680 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:40:56,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:40:56,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:40:56,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:40:56,682 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:40:56,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:40:56,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:40:56,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:40:56,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:40:56,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:40:56,684 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 66 transitions, 164 flow [2020-04-18 07:40:56,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 164 flow [2020-04-18 07:40:56,698 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2020-04-18 07:40:56,698 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 07:40:56,700 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 101 events. 9/101 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2020-04-18 07:40:56,703 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 164 flow [2020-04-18 07:40:56,715 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2020-04-18 07:40:56,715 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 07:40:56,716 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 101 events. 9/101 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2020-04-18 07:40:56,719 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2464 [2020-04-18 07:40:56,720 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:40:57,902 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9770 [2020-04-18 07:40:57,903 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-04-18 07:40:57,903 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 102 flow [2020-04-18 07:40:59,430 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13605 states. [2020-04-18 07:40:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 13605 states. [2020-04-18 07:40:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:59,431 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:40:59,431 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:40:59,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:40:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:59,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1793559108, now seen corresponding path program 1 times [2020-04-18 07:40:59,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:40:59,432 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [834542577] [2020-04-18 07:40:59,432 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:59,433 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:40:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:40:59,433 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:40:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:40:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1793559108, now seen corresponding path program 2 times [2020-04-18 07:40:59,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:40:59,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145348529] [2020-04-18 07:40:59,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:40:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:40:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:40:59,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145348529] [2020-04-18 07:40:59,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:40:59,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:40:59,458 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:40:59,458 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:40:59,458 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:40:59,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:40:59,462 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:40:59,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:59,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:59,462 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-04-18 07:40:59,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:59,465 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:40:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:40:59,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:40:59,466 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [834542577] [2020-04-18 07:40:59,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:40:59,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:40:59,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [834542577] [2020-04-18 07:40:59,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:40:59,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:40:59,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:40:59,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:40:59,467 INFO L87 Difference]: Start difference. First operand 13605 states. Second operand 3 states. [2020-04-18 07:40:59,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:40:59,780 INFO L93 Difference]: Finished difference Result 14477 states and 54603 transitions. [2020-04-18 07:40:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:40:59,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 07:40:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:40:59,913 INFO L225 Difference]: With dead ends: 14477 [2020-04-18 07:40:59,914 INFO L226 Difference]: Without dead ends: 14477 [2020-04-18 07:40:59,914 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:00,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14477 states. [2020-04-18 07:41:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14477 to 12319. [2020-04-18 07:41:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12319 states. [2020-04-18 07:41:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12319 states to 12319 states and 46956 transitions. [2020-04-18 07:41:00,639 INFO L78 Accepts]: Start accepts. Automaton has 12319 states and 46956 transitions. Word has length 7 [2020-04-18 07:41:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:00,639 INFO L479 AbstractCegarLoop]: Abstraction has 12319 states and 46956 transitions. [2020-04-18 07:41:00,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:41:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 12319 states and 46956 transitions. [2020-04-18 07:41:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:00,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:00,641 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:00,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:00,641 INFO L82 PathProgramCache]: Analyzing trace with hash -469570002, now seen corresponding path program 1 times [2020-04-18 07:41:00,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:00,642 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [584459038] [2020-04-18 07:41:00,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:00,643 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 52 transitions. [2020-04-18 07:41:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-04-18 07:41:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:00,644 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:00,645 INFO L82 PathProgramCache]: Analyzing trace with hash -470840442, now seen corresponding path program 2 times [2020-04-18 07:41:00,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:00,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102493904] [2020-04-18 07:41:00,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:00,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102493904] [2020-04-18 07:41:00,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:00,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:00,675 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:00,676 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:00,678 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-04-18 07:41:00,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:00,684 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:41:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:00,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:00,685 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-04-18 07:41:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:00,693 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 07:41:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2020-04-18 07:41:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:00,693 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:41:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash -469570002, now seen corresponding path program 3 times [2020-04-18 07:41:00,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:00,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562804346] [2020-04-18 07:41:00,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:00,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562804346] [2020-04-18 07:41:00,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:00,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:00,743 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:00,744 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:00,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 07:41:00,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:00,751 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 07:41:00,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:00,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:00,752 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand 3 states. [2020-04-18 07:41:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:00,759 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 07:41:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2020-04-18 07:41:00,759 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:00,760 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [584459038] [2020-04-18 07:41:00,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:00,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:00,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [584459038] [2020-04-18 07:41:00,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:00,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:00,761 INFO L87 Difference]: Start difference. First operand 12319 states and 46956 transitions. Second operand 4 states. [2020-04-18 07:41:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:00,821 INFO L93 Difference]: Finished difference Result 825 states and 1576 transitions. [2020-04-18 07:41:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:00,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 07:41:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:00,825 INFO L225 Difference]: With dead ends: 825 [2020-04-18 07:41:00,825 INFO L226 Difference]: Without dead ends: 825 [2020-04-18 07:41:00,825 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-04-18 07:41:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2020-04-18 07:41:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-04-18 07:41:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1576 transitions. [2020-04-18 07:41:00,851 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1576 transitions. Word has length 12 [2020-04-18 07:41:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:00,851 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1576 transitions. [2020-04-18 07:41:00,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1576 transitions. [2020-04-18 07:41:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:41:00,852 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:00,852 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:00,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:41:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1132174805, now seen corresponding path program 1 times [2020-04-18 07:41:00,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:00,853 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1250682137] [2020-04-18 07:41:00,854 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:00,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2020-04-18 07:41:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 07:41:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 07:41:00,857 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1132174805, now seen corresponding path program 2 times [2020-04-18 07:41:00,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:00,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498986291] [2020-04-18 07:41:00,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:00,907 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:41:00,907 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:41:00,907 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:41:00,908 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:41:00,908 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 07:41:00,920 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,921 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,921 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,922 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,922 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,923 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,923 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,924 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,924 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,925 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,925 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,926 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,926 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,927 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,928 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,928 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,929 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,929 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,930 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,930 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,933 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,933 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,933 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,933 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,933 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,937 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,941 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,941 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:00,943 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 07:41:00,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:41:00,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:41:00,943 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:41:00,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:41:00,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:41:00,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:41:00,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:41:00,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:41:00,946 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 201 flow [2020-04-18 07:41:00,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 201 flow [2020-04-18 07:41:00,960 INFO L129 PetriNetUnfolder]: 11/122 cut-off events. [2020-04-18 07:41:00,960 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 07:41:00,961 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 122 events. 11/122 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 117. Up to 12 conditions per place. [2020-04-18 07:41:00,966 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 201 flow [2020-04-18 07:41:00,978 INFO L129 PetriNetUnfolder]: 11/122 cut-off events. [2020-04-18 07:41:00,979 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 07:41:00,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 122 events. 11/122 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 117. Up to 12 conditions per place. [2020-04-18 07:41:00,985 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3740 [2020-04-18 07:41:00,985 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:41:02,198 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2020-04-18 07:41:02,629 INFO L206 etLargeBlockEncoding]: Checked pairs total: 15181 [2020-04-18 07:41:02,629 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-18 07:41:02,630 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 42 transitions, 129 flow [2020-04-18 07:41:35,264 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 95239 states. [2020-04-18 07:41:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 95239 states. [2020-04-18 07:41:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:41:35,265 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:35,265 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:35,266 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:35,266 INFO L82 PathProgramCache]: Analyzing trace with hash -422876695, now seen corresponding path program 1 times [2020-04-18 07:41:35,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:35,267 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [395780299] [2020-04-18 07:41:35,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:35,268 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:41:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-04-18 07:41:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 07:41:35,268 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash -422876695, now seen corresponding path program 2 times [2020-04-18 07:41:35,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:35,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494056194] [2020-04-18 07:41:35,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:35,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494056194] [2020-04-18 07:41:35,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:35,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 07:41:35,299 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:35,299 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:35,300 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 07:41:35,300 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:35,303 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 07:41:35,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:35,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:35,304 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-04-18 07:41:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:35,306 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2020-04-18 07:41:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-04-18 07:41:35,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:35,306 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [395780299] [2020-04-18 07:41:35,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:35,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 07:41:35,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [395780299] [2020-04-18 07:41:35,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 07:41:35,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:35,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:35,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:35,308 INFO L87 Difference]: Start difference. First operand 95239 states. Second operand 3 states. [2020-04-18 07:41:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:38,818 INFO L93 Difference]: Finished difference Result 110595 states and 502973 transitions. [2020-04-18 07:41:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 07:41:38,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 07:41:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:39,585 INFO L225 Difference]: With dead ends: 110595 [2020-04-18 07:41:39,585 INFO L226 Difference]: Without dead ends: 110595 [2020-04-18 07:41:39,585 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110595 states. [2020-04-18 07:41:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110595 to 93453. [2020-04-18 07:41:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93453 states. [2020-04-18 07:41:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93453 states to 93453 states and 431060 transitions. [2020-04-18 07:41:48,095 INFO L78 Accepts]: Start accepts. Automaton has 93453 states and 431060 transitions. Word has length 7 [2020-04-18 07:41:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:48,095 INFO L479 AbstractCegarLoop]: Abstraction has 93453 states and 431060 transitions. [2020-04-18 07:41:48,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 07:41:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 93453 states and 431060 transitions. [2020-04-18 07:41:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:48,096 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:48,096 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:48,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:48,096 INFO L82 PathProgramCache]: Analyzing trace with hash -713155591, now seen corresponding path program 1 times [2020-04-18 07:41:48,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:48,097 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1347077312] [2020-04-18 07:41:48,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:48,098 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 52 transitions. [2020-04-18 07:41:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-04-18 07:41:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:48,099 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -714217111, now seen corresponding path program 2 times [2020-04-18 07:41:48,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:48,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574831233] [2020-04-18 07:41:48,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:48,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574831233] [2020-04-18 07:41:48,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:48,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:48,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:48,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:48,121 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-04-18 07:41:48,121 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:48,124 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 07:41:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:48,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 07:41:48,125 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-04-18 07:41:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:48,129 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 07:41:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2020-04-18 07:41:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 07:41:48,130 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 07:41:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -713155591, now seen corresponding path program 3 times [2020-04-18 07:41:48,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:48,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658044272] [2020-04-18 07:41:48,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:41:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:41:48,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658044272] [2020-04-18 07:41:48,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:41:48,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 07:41:48,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 07:41:48,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:48,157 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 07:41:48,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 07:41:48,166 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 07:41:48,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 07:41:48,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:48,167 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand 3 states. [2020-04-18 07:41:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:48,170 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 07:41:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2020-04-18 07:41:48,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 07:41:48,171 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1347077312] [2020-04-18 07:41:48,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 07:41:48,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 07:41:48,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1347077312] [2020-04-18 07:41:48,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 07:41:48,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 07:41:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 07:41:48,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 07:41:48,172 INFO L87 Difference]: Start difference. First operand 93453 states and 431060 transitions. Second operand 4 states. [2020-04-18 07:41:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:41:48,226 INFO L93 Difference]: Finished difference Result 2089 states and 4072 transitions. [2020-04-18 07:41:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 07:41:48,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 07:41:48,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:41:48,230 INFO L225 Difference]: With dead ends: 2089 [2020-04-18 07:41:48,230 INFO L226 Difference]: Without dead ends: 2089 [2020-04-18 07:41:48,231 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 07:41:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-04-18 07:41:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2089. [2020-04-18 07:41:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2020-04-18 07:41:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 4072 transitions. [2020-04-18 07:41:48,269 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 4072 transitions. Word has length 12 [2020-04-18 07:41:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:41:48,269 INFO L479 AbstractCegarLoop]: Abstraction has 2089 states and 4072 transitions. [2020-04-18 07:41:48,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 07:41:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 4072 transitions. [2020-04-18 07:41:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 07:41:48,270 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:41:48,270 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 07:41:48,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:41:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1747236350, now seen corresponding path program 1 times [2020-04-18 07:41:48,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 07:41:48,271 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [832764842] [2020-04-18 07:41:48,271 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 07:41:48,272 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2020-04-18 07:41:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 07:41:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 07:41:48,272 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 07:41:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:41:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1747236350, now seen corresponding path program 2 times [2020-04-18 07:41:48,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:41:48,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241908878] [2020-04-18 07:41:48,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:41:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:41:48,292 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:41:48,292 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 07:41:48,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:41:48,293 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:41:48,293 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 07:41:48,302 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,302 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,302 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,302 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,303 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,303 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,304 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,305 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,306 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,307 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,308 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,308 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,308 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,308 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,308 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,308 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,309 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,310 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,311 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,311 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,311 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,311 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,311 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,312 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,313 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,313 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,314 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,314 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,315 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,316 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,317 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,317 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,317 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,317 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,318 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,318 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,318 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,318 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,319 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,319 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,320 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,320 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:41:48,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 07:41:48,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:41:48,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:41:48,322 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:41:48,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:41:48,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:41:48,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:41:48,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:41:48,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:41:48,323 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 90 transitions, 240 flow [2020-04-18 07:41:48,323 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 240 flow [2020-04-18 07:41:48,338 INFO L129 PetriNetUnfolder]: 13/143 cut-off events. [2020-04-18 07:41:48,338 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 07:41:48,340 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 143 events. 13/143 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 384 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 146. Up to 14 conditions per place. [2020-04-18 07:41:48,346 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 240 flow [2020-04-18 07:41:48,362 INFO L129 PetriNetUnfolder]: 13/143 cut-off events. [2020-04-18 07:41:48,362 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 07:41:48,363 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 143 events. 13/143 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 384 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 146. Up to 14 conditions per place. [2020-04-18 07:41:48,370 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5280 [2020-04-18 07:41:48,370 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 07:41:50,260 INFO L206 etLargeBlockEncoding]: Checked pairs total: 22623 [2020-04-18 07:41:50,261 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 07:41:50,261 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 50 transitions, 160 flow Received shutdown request... [2020-04-18 07:45:11,014 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 07:45:11,017 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 07:45:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:45:11 BasicIcfg [2020-04-18 07:45:11,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 07:45:11,020 INFO L168 Benchmark]: Toolchain (without parser) took 259733.23 ms. Allocated memory was 143.1 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 99.4 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,020 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.20 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 97.5 MB in the beginning and 158.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.10 ms. Allocated memory is still 201.9 MB. Free memory was 158.9 MB in the beginning and 156.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,022 INFO L168 Benchmark]: Boogie Preprocessor took 26.46 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,023 INFO L168 Benchmark]: RCFGBuilder took 552.82 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 130.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,024 INFO L168 Benchmark]: TraceAbstraction took 258316.06 ms. Allocated memory was 201.9 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 129.8 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2020-04-18 07:45:11,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.20 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 97.5 MB in the beginning and 158.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.10 ms. Allocated memory is still 201.9 MB. Free memory was 158.9 MB in the beginning and 156.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.46 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 552.82 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 130.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258316.06 ms. Allocated memory was 201.9 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 129.8 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 31 ProgramPointsBefore, 11 ProgramPointsAfterwards, 30 TransitionsBefore, 8 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 112 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 164 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 44 ProgramPointsBefore, 24 ProgramPointsAfterwards, 42 TransitionsBefore, 20 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 7 FixpointIterations, 7 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 375 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 47 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2176 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 57 ProgramPointsBefore, 33 ProgramPointsAfterwards, 54 TransitionsBefore, 28 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 7 FixpointIterations, 7 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 842 VarBasedMoverChecksPositive, 130 VarBasedMoverChecksNegative, 120 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 5365 CheckedPairsTotal, 38 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 70 ProgramPointsBefore, 42 ProgramPointsAfterwards, 66 TransitionsBefore, 35 TransitionsAfterwards, 2464 CoEnabledTransitionPairs, 7 FixpointIterations, 7 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 1196 VarBasedMoverChecksPositive, 179 VarBasedMoverChecksNegative, 159 SemBasedMoverChecksPositive, 58 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 9770 CheckedPairsTotal, 43 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 83 ProgramPointsBefore, 51 ProgramPointsAfterwards, 78 TransitionsBefore, 42 TransitionsAfterwards, 3740 CoEnabledTransitionPairs, 7 FixpointIterations, 7 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 1759 VarBasedMoverChecksPositive, 240 VarBasedMoverChecksNegative, 214 SemBasedMoverChecksPositive, 73 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 15181 CheckedPairsTotal, 48 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 96 ProgramPointsBefore, 60 ProgramPointsAfterwards, 90 TransitionsBefore, 50 TransitionsAfterwards, 5280 CoEnabledTransitionPairs, 7 FixpointIterations, 7 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 2495 VarBasedMoverChecksPositive, 441 VarBasedMoverChecksNegative, 608 SemBasedMoverChecksPositive, 87 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.9s, 0 MoverChecksTotal, 22623 CheckedPairsTotal, 58 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 692]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 692). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 60 places, 50 transitions, 160 flow. Already constructed 255081 states. Currently 54174 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 258.0s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 242.4s, HoareTripleCheckerStatistics: 201 SDtfs, 140 SDslu, 84 SDs, 0 SdLazy, 101 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95239occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 19544 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown