/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:23:51,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:23:51,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:23:52,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:23:52,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:23:52,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:23:52,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:23:52,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:23:52,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:23:52,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:23:52,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:23:52,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:23:52,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:23:52,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:23:52,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:23:52,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:23:52,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:23:52,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:23:52,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:23:52,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:23:52,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:23:52,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:23:52,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:23:52,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:23:52,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:23:52,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:23:52,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:23:52,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:23:52,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:23:52,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:23:52,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:23:52,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:23:52,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:23:52,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:23:52,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:23:52,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:23:52,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:23:52,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:23:52,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:23:52,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:23:52,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:23:52,164 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:23:52,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:23:52,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:23:52,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:23:52,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:23:52,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:23:52,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:23:52,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:23:52,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:23:52,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:23:52,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:23:52,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:23:52,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:23:52,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:23:52,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:23:52,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:23:52,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:23:52,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:23:52,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:23:52,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:23:52,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:23:52,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:23:52,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:23:52,171 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:23:52,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:23:52,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:23:52,172 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:23:52,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:23:52,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:23:52,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:23:52,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:23:52,598 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:23:52,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-11-09 17:23:52,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805d44634/ec845927937743b9865291dd05007a74/FLAG2cb50f441 [2020-11-09 17:23:53,390 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:23:53,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-2.i [2020-11-09 17:23:53,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805d44634/ec845927937743b9865291dd05007a74/FLAG2cb50f441 [2020-11-09 17:23:53,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805d44634/ec845927937743b9865291dd05007a74 [2020-11-09 17:23:53,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:23:53,718 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:23:53,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:23:53,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:23:53,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:23:53,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:23:53" (1/1) ... [2020-11-09 17:23:53,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2369a198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:53, skipping insertion in model container [2020-11-09 17:23:53,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:23:53" (1/1) ... [2020-11-09 17:23:53,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:23:53,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:23:54,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:23:54,312 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:23:54,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:23:54,508 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:23:54,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54 WrapperNode [2020-11-09 17:23:54,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:23:54,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:23:54,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:23:54,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:23:54,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:23:54,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:23:54,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:23:54,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:23:54,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (1/1) ... [2020-11-09 17:23:54,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:23:54,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:23:54,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:23:54,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:23:54,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (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 [2020-11-09 17:23:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-11-09 17:23:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-09 17:23:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:23:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-11-09 17:23:54,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-11-09 17:23:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:23:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:23:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:23:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:23:54,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:23:54,777 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:23:55,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:23:55,289 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-09 17:23:55,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:23:55 BoogieIcfgContainer [2020-11-09 17:23:55,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:23:55,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:23:55,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:23:55,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:23:55,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:23:53" (1/3) ... [2020-11-09 17:23:55,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bf3357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:23:55, skipping insertion in model container [2020-11-09 17:23:55,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:54" (2/3) ... [2020-11-09 17:23:55,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bf3357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:23:55, skipping insertion in model container [2020-11-09 17:23:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:23:55" (3/3) ... [2020-11-09 17:23:55,300 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2020-11-09 17:23:55,316 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:23:55,316 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:23:55,320 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:23:55,321 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:23:55,348 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,348 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,348 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,348 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,349 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,349 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,349 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,350 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,351 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,351 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,353 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,354 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,354 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:23:55,365 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-09 17:23:55,378 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:23:55,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:23:55,403 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:23:55,403 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:23:55,404 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:23:55,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:23:55,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:23:55,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:23:55,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:23:55,417 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:23:55,418 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-09 17:23:55,421 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-09 17:23:55,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 80 transitions, 168 flow [2020-11-09 17:23:55,478 INFO L129 PetriNetUnfolder]: 14/117 cut-off events. [2020-11-09 17:23:55,479 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-09 17:23:55,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 117 events. 14/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 254 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2020-11-09 17:23:55,485 INFO L116 LiptonReduction]: Number of co-enabled transitions 420 [2020-11-09 17:23:56,424 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-09 17:23:59,103 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-09 17:23:59,345 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-09 17:23:59,831 WARN L194 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 17:24:00,016 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:00,469 WARN L194 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 17:24:00,654 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:01,156 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-09 17:24:01,507 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 17:24:01,933 WARN L194 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-11-09 17:24:02,308 WARN L194 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 17:24:02,328 INFO L131 LiptonReduction]: Checked pairs total: 485 [2020-11-09 17:24:02,328 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-11-09 17:24:02,338 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-11-09 17:24:02,348 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-11-09 17:24:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-09 17:24:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 17:24:02,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:02,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 17:24:02,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash 9839405, now seen corresponding path program 1 times [2020-11-09 17:24:02,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:02,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109524356] [2020-11-09 17:24:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:24:02,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109524356] [2020-11-09 17:24:02,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:02,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:24:02,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1437544547] [2020-11-09 17:24:02,595 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:02,599 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:02,612 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 17:24:02,613 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:02,617 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:02,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:24:02,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:02,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:24:02,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:02,638 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-11-09 17:24:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:02,672 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-09 17:24:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:24:02,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 17:24:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:02,684 INFO L225 Difference]: With dead ends: 27 [2020-11-09 17:24:02,684 INFO L226 Difference]: Without dead ends: 23 [2020-11-09 17:24:02,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-09 17:24:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-09 17:24:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-09 17:24:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-11-09 17:24:02,723 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-11-09 17:24:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:02,724 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-11-09 17:24:02,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:24:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-11-09 17:24:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 17:24:02,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:02,725 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-09 17:24:02,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:24:02,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 854847300, now seen corresponding path program 1 times [2020-11-09 17:24:02,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:02,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213192933] [2020-11-09 17:24:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:02,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:02,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:02,871 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 17:24:02,872 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 17:24:02,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:24:02,873 WARN L386 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 17:24:02,874 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-11-09 17:24:02,891 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,891 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,892 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,892 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,892 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,892 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,893 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,894 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,895 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,896 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,897 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,897 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,897 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,898 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,898 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,898 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,900 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,900 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,900 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,900 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:02,904 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-11-09 17:24:02,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:24:02,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:24:02,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:24:02,907 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:24:02,907 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:24:02,907 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:24:02,907 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:24:02,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:24:02,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:24:02,909 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:24:02,909 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-09 17:24:02,910 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-09 17:24:02,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 87 transitions, 192 flow [2020-11-09 17:24:02,968 INFO L129 PetriNetUnfolder]: 27/207 cut-off events. [2020-11-09 17:24:02,969 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-11-09 17:24:02,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 207 events. 27/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-11-09 17:24:02,975 INFO L116 LiptonReduction]: Number of co-enabled transitions 1000 [2020-11-09 17:24:05,650 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 17:24:05,850 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 17:24:06,273 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 17:24:06,444 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:06,760 WARN L194 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 17:24:06,916 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:07,247 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-11-09 17:24:07,524 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 17:24:07,858 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2020-11-09 17:24:08,159 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 17:24:08,166 INFO L131 LiptonReduction]: Checked pairs total: 2597 [2020-11-09 17:24:08,166 INFO L133 LiptonReduction]: Total number of compositions: 81 [2020-11-09 17:24:08,167 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-11-09 17:24:08,182 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-11-09 17:24:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-11-09 17:24:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 17:24:08,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:08,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 17:24:08,184 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:08,185 INFO L82 PathProgramCache]: Analyzing trace with hash 15288450, now seen corresponding path program 1 times [2020-11-09 17:24:08,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:08,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565302743] [2020-11-09 17:24:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:24:08,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565302743] [2020-11-09 17:24:08,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:08,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:24:08,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1731972572] [2020-11-09 17:24:08,299 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:08,299 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:08,301 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 17:24:08,301 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:08,302 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:08,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:24:08,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:08,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:24:08,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:08,305 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-11-09 17:24:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:08,369 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-11-09 17:24:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:24:08,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 17:24:08,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:08,382 INFO L225 Difference]: With dead ends: 242 [2020-11-09 17:24:08,382 INFO L226 Difference]: Without dead ends: 216 [2020-11-09 17:24:08,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-09 17:24:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-09 17:24:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-09 17:24:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-11-09 17:24:08,441 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-11-09 17:24:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:08,442 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-11-09 17:24:08,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:24:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-11-09 17:24:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:24:08,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:08,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:08,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:24:08,443 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:08,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1084470026, now seen corresponding path program 1 times [2020-11-09 17:24:08,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:08,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235292635] [2020-11-09 17:24:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 17:24:08,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235292635] [2020-11-09 17:24:08,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:08,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:24:08,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1940509165] [2020-11-09 17:24:08,523 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:08,524 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:08,526 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:24:08,526 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:08,527 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:08,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:24:08,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:08,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:24:08,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:08,528 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 4 states. [2020-11-09 17:24:08,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:08,565 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-11-09 17:24:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:24:08,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 17:24:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:08,568 INFO L225 Difference]: With dead ends: 203 [2020-11-09 17:24:08,568 INFO L226 Difference]: Without dead ends: 203 [2020-11-09 17:24:08,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-09 17:24:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-11-09 17:24:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-11-09 17:24:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-11-09 17:24:08,587 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-11-09 17:24:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:08,588 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-11-09 17:24:08,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:24:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-11-09 17:24:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:24:08,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:08,590 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-11-09 17:24:08,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:24:08,590 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash 269674759, now seen corresponding path program 1 times [2020-11-09 17:24:08,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:08,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453344747] [2020-11-09 17:24:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:08,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:08,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:08,676 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 17:24:08,676 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 17:24:08,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:24:08,677 WARN L386 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 17:24:08,681 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-11-09 17:24:08,690 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,690 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,690 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,690 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,690 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,691 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,691 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,691 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,691 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,691 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,691 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,692 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,692 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,692 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,692 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,692 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,693 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,694 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,694 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,694 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,694 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,694 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,694 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,695 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,696 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,696 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,696 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,696 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,696 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,696 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,698 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,698 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,699 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,699 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,699 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,701 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,701 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,701 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,701 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,701 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,703 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,703 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,703 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,703 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,703 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:08,710 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-11-09 17:24:08,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:24:08,711 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:24:08,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:24:08,711 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:24:08,711 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:24:08,712 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:24:08,712 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:24:08,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:24:08,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:24:08,713 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:24:08,714 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-09 17:24:08,716 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-09 17:24:08,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 94 transitions, 218 flow [2020-11-09 17:24:08,830 INFO L129 PetriNetUnfolder]: 53/374 cut-off events. [2020-11-09 17:24:08,832 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-11-09 17:24:08,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 374 events. 53/374 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1316 event pairs, 1 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 215. Up to 16 conditions per place. [2020-11-09 17:24:08,841 INFO L116 LiptonReduction]: Number of co-enabled transitions 1620 [2020-11-09 17:24:10,598 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-09 17:24:10,773 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-09 17:24:11,723 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-09 17:24:12,358 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-09 17:24:12,633 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-09 17:24:12,966 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-09 17:24:13,272 WARN L194 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-09 17:24:13,295 INFO L131 LiptonReduction]: Checked pairs total: 4210 [2020-11-09 17:24:13,295 INFO L133 LiptonReduction]: Total number of compositions: 79 [2020-11-09 17:24:13,296 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-11-09 17:24:13,341 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-11-09 17:24:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-11-09 17:24:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 17:24:13,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:13,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 17:24:13,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:13,343 INFO L82 PathProgramCache]: Analyzing trace with hash 20773836, now seen corresponding path program 1 times [2020-11-09 17:24:13,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:13,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331044526] [2020-11-09 17:24:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:24:13,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331044526] [2020-11-09 17:24:13,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:13,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:24:13,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [814142036] [2020-11-09 17:24:13,380 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:13,380 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:13,381 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 17:24:13,381 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:13,382 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:13,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:24:13,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:13,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:24:13,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:13,383 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-11-09 17:24:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:13,433 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-11-09 17:24:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:24:13,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 17:24:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:13,448 INFO L225 Difference]: With dead ends: 1150 [2020-11-09 17:24:13,448 INFO L226 Difference]: Without dead ends: 1024 [2020-11-09 17:24:13,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-11-09 17:24:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-11-09 17:24:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-11-09 17:24:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-11-09 17:24:13,563 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-11-09 17:24:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:13,563 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-11-09 17:24:13,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:24:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-11-09 17:24:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:24:13,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:13,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:13,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:24:13,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1395614296, now seen corresponding path program 1 times [2020-11-09 17:24:13,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:13,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135546317] [2020-11-09 17:24:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 17:24:13,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135546317] [2020-11-09 17:24:13,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:13,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:24:13,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1148744460] [2020-11-09 17:24:13,629 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:13,630 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:13,631 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:24:13,631 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:13,632 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:13,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:24:13,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:13,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:24:13,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:13,633 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 4 states. [2020-11-09 17:24:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:13,713 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-11-09 17:24:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:24:13,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 17:24:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:13,721 INFO L225 Difference]: With dead ends: 1015 [2020-11-09 17:24:13,722 INFO L226 Difference]: Without dead ends: 1015 [2020-11-09 17:24:13,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-11-09 17:24:13,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-11-09 17:24:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-11-09 17:24:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-11-09 17:24:13,757 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-11-09 17:24:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:13,758 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-11-09 17:24:13,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:24:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-11-09 17:24:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:24:13,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:13,768 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-11-09 17:24:13,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:24:13,769 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1374284163, now seen corresponding path program 1 times [2020-11-09 17:24:13,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:13,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555630162] [2020-11-09 17:24:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:13,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:13,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:13,848 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 17:24:13,851 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 17:24:13,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:24:13,851 WARN L386 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 17:24:13,852 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-11-09 17:24:13,861 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,862 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,863 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,863 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,863 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,863 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,863 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,864 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,864 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,864 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,864 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,865 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,865 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,865 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,865 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,865 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,865 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,866 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,867 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,868 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,869 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,870 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,870 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,870 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,870 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,870 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,871 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,871 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,871 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,872 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,872 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,873 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,873 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,873 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,874 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,874 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,874 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,874 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,874 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,876 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,876 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,876 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,876 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,876 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:13,879 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-09 17:24:13,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:24:13,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:24:13,881 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:24:13,881 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:24:13,881 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:24:13,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:24:13,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:24:13,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:24:13,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:24:13,883 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:24:13,883 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-09 17:24:13,883 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-09 17:24:13,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 101 transitions, 246 flow [2020-11-09 17:24:13,982 INFO L129 PetriNetUnfolder]: 107/697 cut-off events. [2020-11-09 17:24:13,983 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-11-09 17:24:13,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 697 events. 107/697 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3238 event pairs, 6 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 394. Up to 32 conditions per place. [2020-11-09 17:24:13,998 INFO L116 LiptonReduction]: Number of co-enabled transitions 2320 [2020-11-09 17:24:16,937 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-11-09 17:24:17,184 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-11-09 17:24:17,327 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 17:24:17,523 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-11-09 17:24:17,847 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-11-09 17:24:18,043 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-11-09 17:24:18,283 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-11-09 17:24:18,627 WARN L194 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 17:24:18,763 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 17:24:19,047 WARN L194 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-09 17:24:19,210 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:19,216 INFO L131 LiptonReduction]: Checked pairs total: 7336 [2020-11-09 17:24:19,216 INFO L133 LiptonReduction]: Total number of compositions: 84 [2020-11-09 17:24:19,216 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-11-09 17:24:19,592 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-11-09 17:24:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-11-09 17:24:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 17:24:19,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:19,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 17:24:19,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:19,594 INFO L82 PathProgramCache]: Analyzing trace with hash 26742612, now seen corresponding path program 1 times [2020-11-09 17:24:19,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:19,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652969950] [2020-11-09 17:24:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:24:19,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652969950] [2020-11-09 17:24:19,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:19,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:24:19,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1026546865] [2020-11-09 17:24:19,638 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:19,638 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:19,639 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 17:24:19,639 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:19,639 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:19,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:24:19,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:19,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:24:19,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:19,641 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-11-09 17:24:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:19,752 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-11-09 17:24:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:24:19,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 17:24:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:19,803 INFO L225 Difference]: With dead ends: 5482 [2020-11-09 17:24:19,803 INFO L226 Difference]: Without dead ends: 4856 [2020-11-09 17:24:19,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-11-09 17:24:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-11-09 17:24:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-11-09 17:24:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-11-09 17:24:20,060 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-11-09 17:24:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:20,060 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-11-09 17:24:20,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:24:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-11-09 17:24:20,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:24:20,061 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:20,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:20,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:24:20,062 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1049833476, now seen corresponding path program 1 times [2020-11-09 17:24:20,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:20,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606490520] [2020-11-09 17:24:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 17:24:20,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606490520] [2020-11-09 17:24:20,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:20,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:24:20,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1715492305] [2020-11-09 17:24:20,120 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:20,121 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:20,122 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:24:20,122 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:20,122 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:20,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:24:20,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:24:20,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:20,123 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 4 states. [2020-11-09 17:24:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:20,216 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-11-09 17:24:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:24:20,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 17:24:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:20,261 INFO L225 Difference]: With dead ends: 4995 [2020-11-09 17:24:20,261 INFO L226 Difference]: Without dead ends: 4995 [2020-11-09 17:24:20,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-11-09 17:24:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-11-09 17:24:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-11-09 17:24:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-11-09 17:24:20,485 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-11-09 17:24:20,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:20,485 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-11-09 17:24:20,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:24:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-11-09 17:24:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 17:24:20,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:20,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:20,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:24:20,488 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:20,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2039045855, now seen corresponding path program 1 times [2020-11-09 17:24:20,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:20,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150011023] [2020-11-09 17:24:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 17:24:20,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150011023] [2020-11-09 17:24:20,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640332779] [2020-11-09 17:24:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 17:24:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:20,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 17:24:20,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 17:24:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 17:24:20,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 17:24:20,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-09 17:24:20,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1142745899] [2020-11-09 17:24:20,728 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:20,732 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:20,739 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-11-09 17:24:20,740 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:20,838 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [40907#(<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0), 40908#(or (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0)), 40909#(or (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0))] [2020-11-09 17:24:20,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:24:20,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:20,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:24:20,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 17:24:20,840 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand 7 states. [2020-11-09 17:24:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:21,040 INFO L93 Difference]: Finished difference Result 4793 states and 16389 transitions. [2020-11-09 17:24:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 17:24:21,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 17:24:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:21,092 INFO L225 Difference]: With dead ends: 4793 [2020-11-09 17:24:21,092 INFO L226 Difference]: Without dead ends: 4713 [2020-11-09 17:24:21,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-09 17:24:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2020-11-09 17:24:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4713. [2020-11-09 17:24:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4713 states. [2020-11-09 17:24:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 16141 transitions. [2020-11-09 17:24:21,281 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 16141 transitions. Word has length 16 [2020-11-09 17:24:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:21,282 INFO L481 AbstractCegarLoop]: Abstraction has 4713 states and 16141 transitions. [2020-11-09 17:24:21,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:24:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 16141 transitions. [2020-11-09 17:24:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 17:24:21,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:21,284 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:21,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-09 17:24:21,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2030863678, now seen corresponding path program 1 times [2020-11-09 17:24:21,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:21,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133021276] [2020-11-09 17:24:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:21,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:21,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:21,538 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 17:24:21,538 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 17:24:21,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-09 17:24:21,539 WARN L386 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 17:24:21,539 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-11-09 17:24:21,548 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,548 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,549 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,550 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,551 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,552 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,554 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,558 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,558 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,558 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,558 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,558 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,559 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,560 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,560 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,560 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,561 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,561 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,561 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,561 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,562 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,563 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,563 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,563 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,563 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,563 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,564 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,564 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,565 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,565 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,565 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:21,569 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2020-11-09 17:24:21,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:24:21,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:24:21,570 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:24:21,571 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:24:21,571 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:24:21,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:24:21,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:24:21,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:24:21,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:24:21,572 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:24:21,572 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-09 17:24:21,573 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-09 17:24:21,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 276 flow [2020-11-09 17:24:21,734 INFO L129 PetriNetUnfolder]: 221/1336 cut-off events. [2020-11-09 17:24:21,734 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-11-09 17:24:21,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 1336 events. 221/1336 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7802 event pairs, 23 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 742. Up to 80 conditions per place. [2020-11-09 17:24:21,770 INFO L116 LiptonReduction]: Number of co-enabled transitions 3100 [2020-11-09 17:24:23,739 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-09 17:24:23,935 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-11-09 17:24:24,541 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-11-09 17:24:24,710 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-11-09 17:24:25,548 WARN L194 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 17:24:25,831 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-11-09 17:24:26,185 WARN L194 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-09 17:24:26,486 WARN L194 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-11-09 17:24:26,641 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 17:24:26,795 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 17:24:26,951 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:27,095 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:27,113 INFO L131 LiptonReduction]: Checked pairs total: 11777 [2020-11-09 17:24:27,113 INFO L133 LiptonReduction]: Total number of compositions: 90 [2020-11-09 17:24:27,114 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-11-09 17:24:29,440 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-11-09 17:24:29,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-11-09 17:24:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 17:24:29,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:29,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 17:24:29,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash 33017898, now seen corresponding path program 1 times [2020-11-09 17:24:29,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:29,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483023741] [2020-11-09 17:24:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:24:29,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483023741] [2020-11-09 17:24:29,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:29,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:24:29,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1319082492] [2020-11-09 17:24:29,470 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:29,471 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:29,471 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 17:24:29,471 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:29,472 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:29,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:24:29,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:24:29,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:29,473 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-11-09 17:24:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:29,747 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-11-09 17:24:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:24:29,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 17:24:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:29,908 INFO L225 Difference]: With dead ends: 26310 [2020-11-09 17:24:29,908 INFO L226 Difference]: Without dead ends: 23184 [2020-11-09 17:24:29,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:24:30,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-11-09 17:24:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-11-09 17:24:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-11-09 17:24:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-11-09 17:24:31,743 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-11-09 17:24:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:31,744 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-11-09 17:24:31,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:24:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-11-09 17:24:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:24:31,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:31,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:31,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-09 17:24:31,745 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:31,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1086714792, now seen corresponding path program 1 times [2020-11-09 17:24:31,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:31,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892897028] [2020-11-09 17:24:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 17:24:31,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892897028] [2020-11-09 17:24:31,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:24:31,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:24:31,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894969177] [2020-11-09 17:24:31,904 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:31,905 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:31,907 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:24:31,907 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:31,908 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:24:31,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:24:31,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:31,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:24:31,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:31,911 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 4 states. [2020-11-09 17:24:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:32,331 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-11-09 17:24:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:24:32,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 17:24:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:32,554 INFO L225 Difference]: With dead ends: 24543 [2020-11-09 17:24:32,554 INFO L226 Difference]: Without dead ends: 24543 [2020-11-09 17:24:32,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:24:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-11-09 17:24:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-11-09 17:24:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23577 states. [2020-11-09 17:24:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-11-09 17:24:33,994 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-11-09 17:24:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:33,995 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-11-09 17:24:33,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:24:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-11-09 17:24:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 17:24:33,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:33,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:33,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-09 17:24:33,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:33,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1986019559, now seen corresponding path program 1 times [2020-11-09 17:24:33,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:33,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120094150] [2020-11-09 17:24:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:34,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 17:24:34,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120094150] [2020-11-09 17:24:34,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006848443] [2020-11-09 17:24:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 17:24:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:24:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 17:24:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 17:24:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 17:24:34,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 17:24:34,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-09 17:24:34,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [177964103] [2020-11-09 17:24:34,179 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:24:34,182 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:24:34,185 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-11-09 17:24:34,185 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:24:34,392 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [197163#(<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0), 197165#(or (< (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0)), 197164#(or (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 0))] [2020-11-09 17:24:34,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:24:34,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:24:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:24:34,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 17:24:34,394 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand 7 states. [2020-11-09 17:24:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:24:34,707 INFO L93 Difference]: Finished difference Result 23573 states and 96247 transitions. [2020-11-09 17:24:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 17:24:34,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-09 17:24:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:24:34,821 INFO L225 Difference]: With dead ends: 23573 [2020-11-09 17:24:34,821 INFO L226 Difference]: Without dead ends: 23493 [2020-11-09 17:24:34,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-09 17:24:35,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2020-11-09 17:24:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 23493. [2020-11-09 17:24:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23493 states. [2020-11-09 17:24:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23493 states to 23493 states and 95999 transitions. [2020-11-09 17:24:36,028 INFO L78 Accepts]: Start accepts. Automaton has 23493 states and 95999 transitions. Word has length 16 [2020-11-09 17:24:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:24:36,028 INFO L481 AbstractCegarLoop]: Abstraction has 23493 states and 95999 transitions. [2020-11-09 17:24:36,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:24:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23493 states and 95999 transitions. [2020-11-09 17:24:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-09 17:24:36,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:24:36,036 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:24:36,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 17:24:36,245 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:24:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:24:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1007891007, now seen corresponding path program 1 times [2020-11-09 17:24:36,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:24:36,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104914578] [2020-11-09 17:24:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:24:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:36,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:24:36,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:24:36,307 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 17:24:36,307 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 17:24:36,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-09 17:24:36,308 WARN L386 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 17:24:36,309 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-11-09 17:24:36,320 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,321 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,322 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,323 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,324 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,324 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,326 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,326 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,326 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,327 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,328 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,329 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,330 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,331 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,332 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,333 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,333 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,333 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,334 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,340 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,340 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,341 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,341 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,342 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,342 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,342 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,342 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,342 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,344 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,344 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,344 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,344 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,344 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,346 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,346 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,346 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,346 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,346 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,350 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,350 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,350 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:24:36,356 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2020-11-09 17:24:36,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:24:36,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:24:36,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:24:36,358 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:24:36,358 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:24:36,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:24:36,360 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:24:36,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:24:36,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:24:36,361 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:24:36,362 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-09 17:24:36,362 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-09 17:24:36,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 308 flow [2020-11-09 17:24:36,718 INFO L129 PetriNetUnfolder]: 463/2615 cut-off events. [2020-11-09 17:24:36,718 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-11-09 17:24:36,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 2615 events. 463/2615 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18904 event pairs, 72 based on Foata normal form. 0/2152 useless extension candidates. Maximal degree in co-relation 1435. Up to 192 conditions per place. [2020-11-09 17:24:36,785 INFO L116 LiptonReduction]: Number of co-enabled transitions 3960 [2020-11-09 17:24:37,256 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-09 17:24:38,966 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-09 17:24:39,715 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 17:24:39,853 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-09 17:24:39,980 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 17:24:40,269 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-11-09 17:24:40,848 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-11-09 17:24:41,201 WARN L194 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-11-09 17:24:41,642 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-09 17:24:41,802 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 17:24:42,169 WARN L194 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-11-09 17:24:42,355 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:24:42,361 INFO L131 LiptonReduction]: Checked pairs total: 14715 [2020-11-09 17:24:42,362 INFO L133 LiptonReduction]: Total number of compositions: 88 [2020-11-09 17:24:42,362 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-11-09 17:25:13,273 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-11-09 17:25:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-11-09 17:25:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 17:25:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:25:13,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 17:25:13,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:25:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:25:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash 39516231, now seen corresponding path program 1 times [2020-11-09 17:25:13,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:25:13,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794411586] [2020-11-09 17:25:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:25:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:25:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:25:13,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794411586] [2020-11-09 17:25:13,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:25:13,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:25:13,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1580950427] [2020-11-09 17:25:13,317 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:25:13,317 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:25:13,317 INFO L252 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-11-09 17:25:13,318 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:25:13,318 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:25:13,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:25:13,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:25:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:25:13,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:25:13,319 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-11-09 17:25:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:25:15,261 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-11-09 17:25:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:25:15,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 17:25:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:25:16,645 INFO L225 Difference]: With dead ends: 127122 [2020-11-09 17:25:16,645 INFO L226 Difference]: Without dead ends: 111496 [2020-11-09 17:25:16,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:25:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-11-09 17:25:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-11-09 17:25:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-11-09 17:25:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-11-09 17:25:25,087 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-11-09 17:25:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:25:25,088 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-11-09 17:25:25,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:25:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-11-09 17:25:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:25:25,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:25:25,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:25:25,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-09 17:25:25,102 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:25:25,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:25:25,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1282833239, now seen corresponding path program 1 times [2020-11-09 17:25:25,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:25:25,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409509724] [2020-11-09 17:25:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:25:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:25:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-09 17:25:25,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409509724] [2020-11-09 17:25:25,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:25:25,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:25:25,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [758970819] [2020-11-09 17:25:25,150 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:25:25,151 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:25:25,151 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:25:25,151 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:25:25,152 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:25:25,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:25:25,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:25:25,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:25:25,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:25:25,153 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 4 states. [2020-11-09 17:25:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:25:27,209 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-11-09 17:25:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:25:27,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 17:25:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:25:28,106 INFO L225 Difference]: With dead ends: 120747 [2020-11-09 17:25:28,106 INFO L226 Difference]: Without dead ends: 120747 [2020-11-09 17:25:28,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:25:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-11-09 17:25:35,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-11-09 17:25:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116197 states. [2020-11-09 17:25:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-11-09 17:25:36,283 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-11-09 17:25:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:25:36,283 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-11-09 17:25:36,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:25:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-11-09 17:25:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 17:25:36,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:25:36,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:25:36,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-09 17:25:36,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:25:36,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:25:36,285 INFO L82 PathProgramCache]: Analyzing trace with hash -277261200, now seen corresponding path program 1 times [2020-11-09 17:25:36,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:25:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608915070] [2020-11-09 17:25:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:25:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:25:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 17:25:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608915070] [2020-11-09 17:25:36,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102326082] [2020-11-09 17:25:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 17:25:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:25:36,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-09 17:25:36,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 17:25:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-09 17:25:36,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 17:25:36,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-11-09 17:25:36,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [743655041] [2020-11-09 17:25:36,483 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:25:36,485 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:25:36,488 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions. [2020-11-09 17:25:36,488 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:25:36,520 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:25:36,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:25:36,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:25:36,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:25:36,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:25:36,521 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand 5 states. [2020-11-09 17:25:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:25:38,567 INFO L93 Difference]: Finished difference Result 112372 states and 511618 transitions. [2020-11-09 17:25:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:25:38,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-09 17:25:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:25:39,161 INFO L225 Difference]: With dead ends: 112372 [2020-11-09 17:25:39,161 INFO L226 Difference]: Without dead ends: 112372 [2020-11-09 17:25:39,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:25:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112372 states. [2020-11-09 17:25:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112372 to 109282. [2020-11-09 17:25:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109282 states. [2020-11-09 17:25:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109282 states to 109282 states and 500942 transitions. [2020-11-09 17:25:49,210 INFO L78 Accepts]: Start accepts. Automaton has 109282 states and 500942 transitions. Word has length 16 [2020-11-09 17:25:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:25:49,213 INFO L481 AbstractCegarLoop]: Abstraction has 109282 states and 500942 transitions. [2020-11-09 17:25:49,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:25:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 109282 states and 500942 transitions. [2020-11-09 17:25:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-09 17:25:49,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:25:49,300 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:25:49,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 17:25:49,506 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:25:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:25:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash -559415121, now seen corresponding path program 1 times [2020-11-09 17:25:49,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:25:49,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720543510] [2020-11-09 17:25:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:25:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:25:49,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:25:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 17:25:49,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 17:25:49,620 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 17:25:49,620 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 17:25:49,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-09 17:25:49,621 WARN L386 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-09 17:25:49,621 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-11-09 17:25:49,633 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,633 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,633 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,633 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,634 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,635 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,636 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,637 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,638 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,639 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,640 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,641 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,641 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,646 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,646 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,646 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,647 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,648 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,649 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,650 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,650 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,650 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,650 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,650 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,650 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,653 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,654 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,654 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,654 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,654 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,657 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,659 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,659 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,659 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,659 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,660 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,660 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,660 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,661 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,661 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,663 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,663 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,663 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,663 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,663 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,664 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,665 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,665 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,665 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,665 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,666 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,666 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,666 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,666 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,667 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:25:49,672 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2020-11-09 17:25:49,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 17:25:49,674 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:25:49,674 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:25:49,674 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:25:49,674 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:25:49,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:25:49,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:25:49,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:25:49,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:25:49,679 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:25:49,680 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-09 17:25:49,681 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-09 17:25:49,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 342 flow [2020-11-09 17:25:50,441 INFO L129 PetriNetUnfolder]: 977/5190 cut-off events. [2020-11-09 17:25:50,442 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-11-09 17:25:50,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 5190 events. 977/5190 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 45065 event pairs, 201 based on Foata normal form. 0/4277 useless extension candidates. Maximal degree in co-relation 2833. Up to 448 conditions per place. [2020-11-09 17:25:50,890 INFO L116 LiptonReduction]: Number of co-enabled transitions 4900 [2020-11-09 17:25:53,958 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:25:54,271 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-11-09 17:25:54,561 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-09 17:25:54,755 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-09 17:25:55,261 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-09 17:25:55,636 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-09 17:25:55,785 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-09 17:25:56,065 WARN L194 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-11-09 17:25:56,224 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-09 17:25:56,230 INFO L131 LiptonReduction]: Checked pairs total: 19420 [2020-11-09 17:25:56,231 INFO L133 LiptonReduction]: Total number of compositions: 92 [2020-11-09 17:25:56,231 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-11-09 17:27:44,451 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-09 17:27:44,457 WARN L250 ceAbstractionStarter]: Timeout [2020-11-09 17:27:44,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:27:44 BasicIcfg [2020-11-09 17:27:44,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:27:44,458 INFO L168 Benchmark]: Toolchain (without parser) took 230746.85 ms. Allocated memory was 151.0 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 125.1 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 8.0 GB. [2020-11-09 17:27:44,463 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:27:44,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.90 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 95.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-11-09 17:27:44,465 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.56 ms. Allocated memory is still 151.0 MB. Free memory was 95.3 MB in the beginning and 132.7 MB in the end (delta: -37.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:27:44,465 INFO L168 Benchmark]: Boogie Preprocessor took 54.64 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:27:44,472 INFO L168 Benchmark]: RCFGBuilder took 617.96 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 108.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:27:44,473 INFO L168 Benchmark]: TraceAbstraction took 229164.62 ms. Allocated memory was 151.0 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 108.6 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 8.0 GB. [2020-11-09 17:27:44,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 787.90 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 95.3 MB in the end (delta: 29.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 105.56 ms. Allocated memory is still 151.0 MB. Free memory was 95.3 MB in the beginning and 132.7 MB in the end (delta: -37.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.64 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 617.96 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 108.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 229164.62 ms. Allocated memory was 151.0 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 108.6 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 238 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 6 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.9s, 75 PlacesBefore, 15 PlacesAfterwards, 80 TransitionsBefore, 14 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 485 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 524 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 46 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 83 PlacesBefore, 25 PlacesAfterwards, 87 TransitionsBefore, 23 TransitionsAfterwards, 1000 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 81 TotalNumberOfCompositions, 2597 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 814 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 93 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 91 PlacesBefore, 31 PlacesAfterwards, 94 TransitionsBefore, 28 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 79 TotalNumberOfCompositions, 4210 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1198 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 116 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.3s, 99 PlacesBefore, 37 PlacesAfterwards, 101 TransitionsBefore, 33 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 84 TotalNumberOfCompositions, 7336 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1566 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 258 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.5s, 107 PlacesBefore, 43 PlacesAfterwards, 108 TransitionsBefore, 38 TransitionsAfterwards, 3100 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 90 TotalNumberOfCompositions, 11777 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1909 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 300 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.9s, 115 PlacesBefore, 49 PlacesAfterwards, 115 TransitionsBefore, 43 TransitionsAfterwards, 3960 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 88 TotalNumberOfCompositions, 14715 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2528 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 410 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.5s, 123 PlacesBefore, 55 PlacesAfterwards, 122 TransitionsBefore, 48 TransitionsAfterwards, 4900 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 19420 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 201265 states. Currently 32666 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 228.8s, OverallIterations: 20, TraceHistogramMax: 7, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 182.1s, HoareTripleCheckerStatistics: 488 SDtfs, 569 SDslu, 595 SDs, 0 SdLazy, 242 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 62 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred 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: 32.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 8848 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 5707 SizeOfPredicates, 3 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 17/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown