/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:05:21,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:05:21,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:05:21,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:05:21,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:05:21,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:05:21,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:05:21,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:05:21,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:05:21,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:05:21,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:05:21,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:05:21,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:05:21,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:05:21,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:05:21,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:05:21,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:05:21,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:05:21,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:05:21,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:05:21,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:05:21,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:05:21,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:05:21,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:05:21,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 00:05:21,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:05:21,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:05:21,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:05:21,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:05:21,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:05:21,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:05:21,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:05:21,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:05:21,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:05:21,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:05:21,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:05:21,607 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-WP.epf [2020-10-06 00:05:21,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:05:21,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:05:21,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:05:21,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:05:21,631 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:05:21,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:05:21,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:05:21,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:05:21,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:05:21,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:05:21,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:05:21,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:05:21,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:05:21,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:05:21,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:05:21,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:05:21,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:05:21,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:05:21,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:05:21,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:05:21,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:05:21,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:05:21,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:05:21,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:05:21,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:05:21,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:05:21,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:05:21,635 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:05:21,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:05:21,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:05:21,635 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:05:21,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:05:21,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:05:21,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:05:21,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:05:21,956 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:05:21,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i [2020-10-06 00:05:22,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454bd2447/c996eb989e5d47acbfe01abddf73f07f/FLAG63739550d [2020-10-06 00:05:22,501 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:05:22,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i [2020-10-06 00:05:22,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454bd2447/c996eb989e5d47acbfe01abddf73f07f/FLAG63739550d [2020-10-06 00:05:22,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454bd2447/c996eb989e5d47acbfe01abddf73f07f [2020-10-06 00:05:22,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:05:22,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:05:22,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:05:22,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:05:22,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:05:22,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:05:22" (1/1) ... [2020-10-06 00:05:22,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3436a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:22, skipping insertion in model container [2020-10-06 00:05:22,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:05:22" (1/1) ... [2020-10-06 00:05:22,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:05:22,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:05:23,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:05:23,346 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:05:23,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:05:23,454 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:05:23,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23 WrapperNode [2020-10-06 00:05:23,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:05:23,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:05:23,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:05:23,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:05:23,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:05:23,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:05:23,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:05:23,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:05:23,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (1/1) ... [2020-10-06 00:05:23,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:05:23,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:05:23,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:05:23,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:05:23,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (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 [2020-10-06 00:05:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-06 00:05:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-06 00:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:05:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:05:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:05:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:05:23,599 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:05:23,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:05:23,956 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-06 00:05:23,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:05:23 BoogieIcfgContainer [2020-10-06 00:05:23,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:05:23,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:05:23,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:05:23,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:05:23,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:05:22" (1/3) ... [2020-10-06 00:05:23,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae85272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:05:23, skipping insertion in model container [2020-10-06 00:05:23,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:23" (2/3) ... [2020-10-06 00:05:23,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae85272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:05:23, skipping insertion in model container [2020-10-06 00:05:23,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:05:23" (3/3) ... [2020-10-06 00:05:23,967 INFO L109 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2020-10-06 00:05:23,976 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:05:23,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:05:23,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 00:05:23,983 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:05:24,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:24,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 00:05:24,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:24,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:24,058 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:24,058 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:24,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:24,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:24,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:24,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:24,073 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 30 transitions, 65 flow [2020-10-06 00:05:24,075 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 65 flow [2020-10-06 00:05:24,105 INFO L129 PetriNetUnfolder]: 3/38 cut-off events. [2020-10-06 00:05:24,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:05:24,110 INFO L80 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2020-10-06 00:05:24,112 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 65 flow [2020-10-06 00:05:24,125 INFO L129 PetriNetUnfolder]: 3/38 cut-off events. [2020-10-06 00:05:24,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:05:24,126 INFO L80 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2020-10-06 00:05:24,130 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 220 [2020-10-06 00:05:24,131 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:24,781 INFO L206 etLargeBlockEncoding]: Checked pairs total: 153 [2020-10-06 00:05:24,781 INFO L214 etLargeBlockEncoding]: Total number of compositions: 26 [2020-10-06 00:05:24,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-06 00:05:24,795 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-06 00:05:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-06 00:05:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-06 00:05:24,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:24,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-06 00:05:24,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:05:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash 5863591, now seen corresponding path program 1 times [2020-10-06 00:05:24,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:24,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341898153] [2020-10-06 00:05:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:25,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341898153] [2020-10-06 00:05:25,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:25,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 00:05:25,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [240603971] [2020-10-06 00:05:25,011 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:25,014 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:25,026 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-06 00:05:25,026 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:25,031 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:25,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 00:05:25,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:25,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 00:05:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 00:05:25,049 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-06 00:05:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:25,053 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-06 00:05:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 00:05:25,055 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-06 00:05:25,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:25,063 INFO L225 Difference]: With dead ends: 11 [2020-10-06 00:05:25,063 INFO L226 Difference]: Without dead ends: 11 [2020-10-06 00:05:25,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 00:05:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-06 00:05:25,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-06 00:05:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-06 00:05:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-06 00:05:25,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-06 00:05:25,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:25,101 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-06 00:05:25,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 00:05:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-06 00:05:25,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 00:05:25,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:25,102 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-06 00:05:25,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:05:25,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:05:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:25,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1339900235, now seen corresponding path program 1 times [2020-10-06 00:05:25,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:25,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634683130] [2020-10-06 00:05:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:25,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:25,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:25,175 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:05:25,175 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:05:25,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:05:25,178 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:05:25,178 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-06 00:05:25,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 00:05:25,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:25,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:25,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:25,197 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:25,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:25,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:25,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:25,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:25,200 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 42 transitions, 96 flow [2020-10-06 00:05:25,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 96 flow [2020-10-06 00:05:25,215 INFO L129 PetriNetUnfolder]: 5/59 cut-off events. [2020-10-06 00:05:25,215 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-06 00:05:25,216 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 5/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2020-10-06 00:05:25,218 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 96 flow [2020-10-06 00:05:25,230 INFO L129 PetriNetUnfolder]: 5/59 cut-off events. [2020-10-06 00:05:25,230 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-06 00:05:25,231 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 5/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2020-10-06 00:05:25,232 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 704 [2020-10-06 00:05:25,233 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:25,720 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1959 [2020-10-06 00:05:25,721 INFO L214 etLargeBlockEncoding]: Total number of compositions: 24 [2020-10-06 00:05:25,722 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 54 flow [2020-10-06 00:05:25,744 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 312 states. [2020-10-06 00:05:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-10-06 00:05:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-06 00:05:25,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:25,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:25,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:25,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:25,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1718767533, now seen corresponding path program 1 times [2020-10-06 00:05:25,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:25,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669919214] [2020-10-06 00:05:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:25,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669919214] [2020-10-06 00:05:25,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:25,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:25,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [74265756] [2020-10-06 00:05:25,798 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:25,801 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:25,803 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-06 00:05:25,803 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:25,804 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:25,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:25,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:25,805 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2020-10-06 00:05:25,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:25,846 INFO L93 Difference]: Finished difference Result 237 states and 526 transitions. [2020-10-06 00:05:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:25,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-06 00:05:25,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:25,854 INFO L225 Difference]: With dead ends: 237 [2020-10-06 00:05:25,854 INFO L226 Difference]: Without dead ends: 237 [2020-10-06 00:05:25,855 INFO L675 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 [2020-10-06 00:05:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-06 00:05:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 221. [2020-10-06 00:05:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-06 00:05:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 490 transitions. [2020-10-06 00:05:25,898 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 490 transitions. Word has length 7 [2020-10-06 00:05:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:25,899 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 490 transitions. [2020-10-06 00:05:25,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 490 transitions. [2020-10-06 00:05:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:05:25,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:25,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-06 00:05:25,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:05:25,901 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:25,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:25,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1171788357, now seen corresponding path program 1 times [2020-10-06 00:05:25,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:25,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876840425] [2020-10-06 00:05:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:25,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:25,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:25,934 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:05:25,935 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:05:25,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 00:05:25,935 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:05:25,937 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-06 00:05:25,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,944 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,944 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,944 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,945 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,945 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,946 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,946 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,946 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,946 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,947 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,947 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,947 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,947 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:25,961 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-06 00:05:25,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:25,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:25,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:25,962 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:25,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:25,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:25,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:25,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:25,965 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 54 transitions, 129 flow [2020-10-06 00:05:25,965 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 129 flow [2020-10-06 00:05:25,978 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-10-06 00:05:25,979 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-06 00:05:25,980 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 80 events. 7/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2020-10-06 00:05:25,982 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 129 flow [2020-10-06 00:05:25,993 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-10-06 00:05:25,993 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-06 00:05:25,994 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 80 events. 7/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2020-10-06 00:05:25,996 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1452 [2020-10-06 00:05:25,996 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:26,499 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4812 [2020-10-06 00:05:26,499 INFO L214 etLargeBlockEncoding]: Total number of compositions: 30 [2020-10-06 00:05:26,499 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 81 flow [2020-10-06 00:05:26,615 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2532 states. [2020-10-06 00:05:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states. [2020-10-06 00:05:26,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-06 00:05:26,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:26,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:26,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1449769539, now seen corresponding path program 1 times [2020-10-06 00:05:26,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:26,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126217160] [2020-10-06 00:05:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:26,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126217160] [2020-10-06 00:05:26,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:26,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:26,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [616432378] [2020-10-06 00:05:26,650 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:26,650 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:26,651 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-06 00:05:26,651 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:26,652 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:26,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:26,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:26,653 INFO L87 Difference]: Start difference. First operand 2532 states. Second operand 3 states. [2020-10-06 00:05:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:26,730 INFO L93 Difference]: Finished difference Result 2235 states and 6510 transitions. [2020-10-06 00:05:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:26,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-06 00:05:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:26,754 INFO L225 Difference]: With dead ends: 2235 [2020-10-06 00:05:26,754 INFO L226 Difference]: Without dead ends: 2235 [2020-10-06 00:05:26,755 INFO L675 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 [2020-10-06 00:05:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-10-06 00:05:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1975. [2020-10-06 00:05:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-06 00:05:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 5778 transitions. [2020-10-06 00:05:26,862 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 5778 transitions. Word has length 7 [2020-10-06 00:05:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:26,862 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 5778 transitions. [2020-10-06 00:05:26,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 5778 transitions. [2020-10-06 00:05:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:05:26,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:26,865 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:26,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 00:05:26,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1410758532, now seen corresponding path program 1 times [2020-10-06 00:05:26,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:26,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133678015] [2020-10-06 00:05:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:26,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133678015] [2020-10-06 00:05:26,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:26,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:05:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [737131704] [2020-10-06 00:05:26,907 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:26,908 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:26,910 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-06 00:05:26,910 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:26,924 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:26,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:26,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:26,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:26,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:26,926 INFO L87 Difference]: Start difference. First operand 1975 states and 5778 transitions. Second operand 3 states. [2020-10-06 00:05:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:26,945 INFO L93 Difference]: Finished difference Result 305 states and 564 transitions. [2020-10-06 00:05:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:26,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-06 00:05:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:26,947 INFO L225 Difference]: With dead ends: 305 [2020-10-06 00:05:26,948 INFO L226 Difference]: Without dead ends: 305 [2020-10-06 00:05:26,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-06 00:05:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2020-10-06 00:05:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-06 00:05:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 564 transitions. [2020-10-06 00:05:26,957 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 564 transitions. Word has length 12 [2020-10-06 00:05:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:26,957 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 564 transitions. [2020-10-06 00:05:26,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 564 transitions. [2020-10-06 00:05:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:05:26,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:26,959 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-06 00:05:26,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 00:05:26,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 172701547, now seen corresponding path program 1 times [2020-10-06 00:05:26,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:26,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889314375] [2020-10-06 00:05:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:26,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:26,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:26,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:05:26,990 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:05:26,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 00:05:26,990 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:05:26,991 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-06 00:05:26,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:26,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,003 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,006 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,006 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,007 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,007 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,008 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,008 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,011 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,011 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:27,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-06 00:05:27,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:27,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:27,015 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:27,015 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:27,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:27,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:27,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:27,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:27,017 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 66 transitions, 164 flow [2020-10-06 00:05:27,017 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 164 flow [2020-10-06 00:05:27,030 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2020-10-06 00:05:27,030 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-06 00:05:27,032 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 101 events. 9/101 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2020-10-06 00:05:27,035 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 164 flow [2020-10-06 00:05:27,061 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2020-10-06 00:05:27,061 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-06 00:05:27,062 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 101 events. 9/101 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 250 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2020-10-06 00:05:27,069 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2464 [2020-10-06 00:05:27,070 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:27,707 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7692 [2020-10-06 00:05:27,707 INFO L214 etLargeBlockEncoding]: Total number of compositions: 34 [2020-10-06 00:05:27,708 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 35 transitions, 102 flow [2020-10-06 00:05:29,041 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 15516 states. [2020-10-06 00:05:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15516 states. [2020-10-06 00:05:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-06 00:05:29,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:29,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:29,042 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:05:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:29,043 INFO L82 PathProgramCache]: Analyzing trace with hash -121478764, now seen corresponding path program 1 times [2020-10-06 00:05:29,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:29,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308809829] [2020-10-06 00:05:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:29,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308809829] [2020-10-06 00:05:29,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:29,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:29,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1498224393] [2020-10-06 00:05:29,074 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:29,074 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:29,075 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-06 00:05:29,075 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:29,075 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:29,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:29,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:29,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:29,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:29,076 INFO L87 Difference]: Start difference. First operand 15516 states. Second operand 3 states. [2020-10-06 00:05:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:29,493 INFO L93 Difference]: Finished difference Result 16239 states and 60448 transitions. [2020-10-06 00:05:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:29,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-06 00:05:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:29,667 INFO L225 Difference]: With dead ends: 16239 [2020-10-06 00:05:29,667 INFO L226 Difference]: Without dead ends: 16239 [2020-10-06 00:05:29,667 INFO L675 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 [2020-10-06 00:05:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16239 states. [2020-10-06 00:05:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16239 to 13853. [2020-10-06 00:05:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13853 states. [2020-10-06 00:05:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13853 states to 13853 states and 52141 transitions. [2020-10-06 00:05:30,572 INFO L78 Accepts]: Start accepts. Automaton has 13853 states and 52141 transitions. Word has length 7 [2020-10-06 00:05:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:30,573 INFO L479 AbstractCegarLoop]: Abstraction has 13853 states and 52141 transitions. [2020-10-06 00:05:30,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 13853 states and 52141 transitions. [2020-10-06 00:05:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:05:30,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:30,579 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:30,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 00:05:30,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:05:30,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:30,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1384903977, now seen corresponding path program 1 times [2020-10-06 00:05:30,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:30,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471977031] [2020-10-06 00:05:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:30,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471977031] [2020-10-06 00:05:30,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:30,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:05:30,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1976505751] [2020-10-06 00:05:30,622 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:30,623 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:30,625 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-06 00:05:30,625 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:30,632 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:30,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:30,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:30,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:30,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:30,634 INFO L87 Difference]: Start difference. First operand 13853 states and 52141 transitions. Second operand 3 states. [2020-10-06 00:05:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:30,656 INFO L93 Difference]: Finished difference Result 825 states and 1576 transitions. [2020-10-06 00:05:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:30,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-06 00:05:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:30,659 INFO L225 Difference]: With dead ends: 825 [2020-10-06 00:05:30,659 INFO L226 Difference]: Without dead ends: 825 [2020-10-06 00:05:30,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-06 00:05:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2020-10-06 00:05:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-10-06 00:05:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1576 transitions. [2020-10-06 00:05:30,685 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1576 transitions. Word has length 12 [2020-10-06 00:05:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:30,685 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 1576 transitions. [2020-10-06 00:05:30,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1576 transitions. [2020-10-06 00:05:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:05:30,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:30,686 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:30,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 00:05:30,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:05:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:30,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1814550274, now seen corresponding path program 1 times [2020-10-06 00:05:30,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:30,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441811054] [2020-10-06 00:05:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:30,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:05:30,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:05:30,716 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:05:30,716 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:05:30,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-06 00:05:30,717 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:05:30,717 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-06 00:05:30,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:30,749 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-06 00:05:30,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:30,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:30,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:30,750 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:30,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:30,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:30,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:30,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:30,752 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 201 flow [2020-10-06 00:05:30,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 201 flow [2020-10-06 00:05:30,766 INFO L129 PetriNetUnfolder]: 11/122 cut-off events. [2020-10-06 00:05:30,767 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-06 00:05:30,768 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 122 events. 11/122 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 117. Up to 12 conditions per place. [2020-10-06 00:05:30,774 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 201 flow [2020-10-06 00:05:30,788 INFO L129 PetriNetUnfolder]: 11/122 cut-off events. [2020-10-06 00:05:30,789 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-06 00:05:30,791 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 122 events. 11/122 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 117. Up to 12 conditions per place. [2020-10-06 00:05:30,797 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3740 [2020-10-06 00:05:30,797 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:31,348 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2020-10-06 00:05:31,803 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11517 [2020-10-06 00:05:31,803 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-10-06 00:05:31,805 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 42 transitions, 129 flow [2020-10-06 00:06:13,817 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 107244 states. [2020-10-06 00:06:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 107244 states. [2020-10-06 00:06:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-06 00:06:13,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:06:13,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:06:13,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:06:13,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:06:13,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1907072551, now seen corresponding path program 1 times [2020-10-06 00:06:13,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:06:13,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683846699] [2020-10-06 00:06:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:06:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:06:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:06:13,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683846699] [2020-10-06 00:06:13,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:06:13,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:06:13,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [582365675] [2020-10-06 00:06:13,857 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:06:13,858 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:06:13,859 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-06 00:06:13,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:06:13,859 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:06:13,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:06:13,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:06:13,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:06:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:06:13,860 INFO L87 Difference]: Start difference. First operand 107244 states. Second operand 3 states. [2020-10-06 00:06:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:06:14,720 INFO L93 Difference]: Finished difference Result 123595 states and 557159 transitions. [2020-10-06 00:06:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:06:14,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-06 00:06:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:06:15,520 INFO L225 Difference]: With dead ends: 123595 [2020-10-06 00:06:15,520 INFO L226 Difference]: Without dead ends: 123595 [2020-10-06 00:06:15,522 INFO L675 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 [2020-10-06 00:06:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123595 states. [2020-10-06 00:06:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123595 to 104469. [2020-10-06 00:06:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104469 states. [2020-10-06 00:06:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104469 states to 104469 states and 478142 transitions. [2020-10-06 00:06:28,683 INFO L78 Accepts]: Start accepts. Automaton has 104469 states and 478142 transitions. Word has length 7 [2020-10-06 00:06:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:06:28,683 INFO L479 AbstractCegarLoop]: Abstraction has 104469 states and 478142 transitions. [2020-10-06 00:06:28,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:06:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 104469 states and 478142 transitions. [2020-10-06 00:06:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:06:28,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:06:28,684 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:06:28,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-06 00:06:28,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:06:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:06:28,685 INFO L82 PathProgramCache]: Analyzing trace with hash -682990692, now seen corresponding path program 1 times [2020-10-06 00:06:28,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:06:28,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612636121] [2020-10-06 00:06:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:06:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:06:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:06:28,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612636121] [2020-10-06 00:06:28,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:06:28,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:06:28,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [148213806] [2020-10-06 00:06:28,714 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:06:28,715 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:06:28,716 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-10-06 00:06:28,716 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:06:28,760 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:06:28,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:06:28,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:06:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:06:28,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:06:28,761 INFO L87 Difference]: Start difference. First operand 104469 states and 478142 transitions. Second operand 3 states. [2020-10-06 00:06:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:06:28,794 INFO L93 Difference]: Finished difference Result 2089 states and 4072 transitions. [2020-10-06 00:06:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:06:28,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-06 00:06:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:06:28,800 INFO L225 Difference]: With dead ends: 2089 [2020-10-06 00:06:28,800 INFO L226 Difference]: Without dead ends: 2089 [2020-10-06 00:06:28,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:06:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-10-06 00:06:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2089. [2020-10-06 00:06:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2020-10-06 00:06:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 4072 transitions. [2020-10-06 00:06:28,849 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 4072 transitions. Word has length 12 [2020-10-06 00:06:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:06:28,849 INFO L479 AbstractCegarLoop]: Abstraction has 2089 states and 4072 transitions. [2020-10-06 00:06:28,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:06:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 4072 transitions. [2020-10-06 00:06:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:06:28,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:06:28,851 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:06:28,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-06 00:06:28,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:06:28,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:06:28,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1831611674, now seen corresponding path program 1 times [2020-10-06 00:06:28,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:06:28,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467451250] [2020-10-06 00:06:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:06:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:06:28,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:06:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:06:28,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:06:28,877 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:06:28,877 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:06:28,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-06 00:06:28,878 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:06:28,878 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-06 00:06:28,887 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,888 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,888 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,889 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,889 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,890 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,890 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,891 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,891 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,892 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,892 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,893 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,893 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,894 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,912 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,912 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,914 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,915 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,915 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,916 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,916 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:06:28,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-06 00:06:28,924 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:06:28,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:06:28,925 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:06:28,925 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:06:28,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:06:28,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:06:28,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:06:28,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:06:28,927 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 90 transitions, 240 flow [2020-10-06 00:06:28,929 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 240 flow [2020-10-06 00:06:28,954 INFO L129 PetriNetUnfolder]: 13/143 cut-off events. [2020-10-06 00:06:28,955 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-06 00:06:28,957 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 143 events. 13/143 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 146. Up to 14 conditions per place. [2020-10-06 00:06:28,963 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 240 flow [2020-10-06 00:06:28,978 INFO L129 PetriNetUnfolder]: 13/143 cut-off events. [2020-10-06 00:06:28,979 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-06 00:06:28,981 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 143 events. 13/143 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 146. Up to 14 conditions per place. [2020-10-06 00:06:28,987 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5280 [2020-10-06 00:06:28,987 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:06:29,865 INFO L206 etLargeBlockEncoding]: Checked pairs total: 20682 [2020-10-06 00:06:29,866 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-10-06 00:06:29,866 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 55 transitions, 170 flow Received shutdown request... [2020-10-06 00:09:48,951 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-06 00:09:48,954 WARN L228 ceAbstractionStarter]: Timeout [2020-10-06 00:09:48,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:09:48 BasicIcfg [2020-10-06 00:09:48,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:09:48,957 INFO L168 Benchmark]: Toolchain (without parser) took 266150.10 ms. Allocated memory was 147.8 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 100.9 MB in the beginning and 988.8 MB in the end (delta: -887.9 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,957 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.19 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 100.7 MB in the beginning and 163.7 MB in the end (delta: -63.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 204.5 MB. Free memory was 163.7 MB in the beginning and 161.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,968 INFO L168 Benchmark]: Boogie Preprocessor took 25.24 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 160.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,968 INFO L168 Benchmark]: RCFGBuilder took 434.00 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 137.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,969 INFO L168 Benchmark]: TraceAbstraction took 264994.54 ms. Allocated memory was 204.5 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 136.8 MB in the beginning and 988.8 MB in the end (delta: -852.0 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2020-10-06 00:09:48,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.19 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 100.7 MB in the beginning and 163.7 MB in the end (delta: -63.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 204.5 MB. Free memory was 163.7 MB in the beginning and 161.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.24 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 160.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.00 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 137.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264994.54 ms. Allocated memory was 204.5 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 136.8 MB in the beginning and 988.8 MB in the end (delta: -852.0 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 31 ProgramPointsBefore, 11 ProgramPointsAfterwards, 30 TransitionsBefore, 8 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 109 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 153 CheckedPairsTotal, 26 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 44 ProgramPointsBefore, 25 ProgramPointsAfterwards, 42 TransitionsBefore, 21 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 307 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1959 CheckedPairsTotal, 24 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 57 ProgramPointsBefore, 35 ProgramPointsAfterwards, 54 TransitionsBefore, 30 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4812 CheckedPairsTotal, 30 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 70 ProgramPointsBefore, 43 ProgramPointsAfterwards, 66 TransitionsBefore, 35 TransitionsAfterwards, 2464 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 959 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 7692 CheckedPairsTotal, 34 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 83 ProgramPointsBefore, 52 ProgramPointsAfterwards, 78 TransitionsBefore, 42 TransitionsAfterwards, 3740 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 1447 VarBasedMoverChecksPositive, 50 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 11517 CheckedPairsTotal, 39 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 96 ProgramPointsBefore, 64 ProgramPointsAfterwards, 90 TransitionsBefore, 55 TransitionsAfterwards, 5280 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 2170 VarBasedMoverChecksPositive, 65 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 20682 CheckedPairsTotal, 47 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 692]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 692). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 64 places, 55 transitions, 170 flow. Already constructed 258793 states. Currently 62871 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 264.7s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 247.0s, HoareTripleCheckerStatistics: 215 SDtfs, 111 SDslu, 71 SDs, 0 SdLazy, 88 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107244occurred 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: 14.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 21788 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 850 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 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