/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.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:12:17,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:12:17,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:12:17,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:12:17,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:12:17,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:12:17,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:12:17,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:12:17,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:12:17,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:12:17,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:12:17,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:12:17,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:12:17,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:12:17,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:12:17,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:12:17,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:12:17,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:12:17,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:12:17,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:12:17,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:12:17,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:12:17,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:12:17,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:12:17,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:12:17,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:12:17,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:12:17,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:12:17,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:12:17,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:12:17,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:12:17,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:12:17,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:12:17,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:12:17,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:12:17,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:12:17,779 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.epf [2020-10-05 23:12:17,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:12:17,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:12:17,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:12:17,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:12:17,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:12:17,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:12:17,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:12:17,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:12:17,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:12:17,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:12:17,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:12:17,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:12:17,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:12:17,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:12:17,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:12:17,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:12:17,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:12:17,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:12:17,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:12:17,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:12:17,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:12:17,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:12:17,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:12:17,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:12:17,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:12:17,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:12:17,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:12:17,825 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:12:17,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:12:18,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:12:18,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:12:18,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:12:18,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:12:18,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:12:18,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-05 23:12:18,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2ca8b65/e24b913f326845008f1fc7b23662aca0/FLAG76b2ddedc [2020-10-05 23:12:18,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:12:18,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-05 23:12:18,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2ca8b65/e24b913f326845008f1fc7b23662aca0/FLAG76b2ddedc [2020-10-05 23:12:19,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2ca8b65/e24b913f326845008f1fc7b23662aca0 [2020-10-05 23:12:19,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:12:19,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:12:19,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:12:19,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:12:19,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:12:19,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8129078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19, skipping insertion in model container [2020-10-05 23:12:19,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:12:19,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:12:19,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:12:19,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:12:19,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:12:19,767 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:12:19,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19 WrapperNode [2020-10-05 23:12:19,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:12:19,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:12:19,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:12:19,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:12:19,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:12:19,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:12:19,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:12:19,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:12:19,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (1/1) ... [2020-10-05 23:12:19,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:12:19,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:12:19,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:12:19,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:12:19,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (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 [2020-10-05 23:12:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:12:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-05 23:12:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-05 23:12:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:12:19,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:12:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:12:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:12:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:12:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:12:19,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:12:19,924 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:12:20,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:12:20,276 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:12:20,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:12:20 BoogieIcfgContainer [2020-10-05 23:12:20,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:12:20,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:12:20,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:12:20,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:12:20,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:12:19" (1/3) ... [2020-10-05 23:12:20,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1ab3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:12:20, skipping insertion in model container [2020-10-05 23:12:20,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:12:19" (2/3) ... [2020-10-05 23:12:20,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1ab3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:12:20, skipping insertion in model container [2020-10-05 23:12:20,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:12:20" (3/3) ... [2020-10-05 23:12:20,287 INFO L109 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-05 23:12:20,298 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:12:20,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:12:20,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-05 23:12:20,308 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:12:20,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,336 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,338 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,338 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,339 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,340 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,345 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,352 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,352 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,353 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,353 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:12:20,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-05 23:12:20,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:12:20,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:12:20,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:12:20,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:12:20,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:12:20,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:12:20,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:12:20,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:12:20,417 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 146 flow [2020-10-05 23:12:20,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-05 23:12:20,461 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-05 23:12:20,462 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:12:20,468 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-10-05 23:12:20,470 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-05 23:12:20,491 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-05 23:12:20,491 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:12:20,492 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-10-05 23:12:20,494 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 756 [2020-10-05 23:12:20,496 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:12:21,249 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1582 [2020-10-05 23:12:21,249 INFO L214 etLargeBlockEncoding]: Total number of compositions: 32 [2020-10-05 23:12:21,253 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 35 transitions, 92 flow [2020-10-05 23:12:21,274 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 216 states. [2020-10-05 23:12:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-10-05 23:12:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:12:21,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:21,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 23:12:21,285 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:21,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1408592637, now seen corresponding path program 1 times [2020-10-05 23:12:21,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:21,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385455494] [2020-10-05 23:12:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:21,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385455494] [2020-10-05 23:12:21,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:21,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:12:21,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190376661] [2020-10-05 23:12:21,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 23:12:21,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:21,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 23:12:21,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:12:21,513 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2020-10-05 23:12:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:21,542 INFO L93 Difference]: Finished difference Result 216 states and 500 transitions. [2020-10-05 23:12:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 23:12:21,545 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-05 23:12:21,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:21,563 INFO L225 Difference]: With dead ends: 216 [2020-10-05 23:12:21,564 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 23:12:21,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 23:12:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 23:12:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-05 23:12:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-05 23:12:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 436 transitions. [2020-10-05 23:12:21,656 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 436 transitions. Word has length 6 [2020-10-05 23:12:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:21,657 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 436 transitions. [2020-10-05 23:12:21,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 23:12:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 436 transitions. [2020-10-05 23:12:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:12:21,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:21,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:21,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:12:21,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:21,659 INFO L82 PathProgramCache]: Analyzing trace with hash -716726219, now seen corresponding path program 1 times [2020-10-05 23:12:21,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:21,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809751607] [2020-10-05 23:12:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:21,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809751607] [2020-10-05 23:12:21,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:21,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:12:21,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861793792] [2020-10-05 23:12:21,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:21,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:21,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:21,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:21,780 INFO L87 Difference]: Start difference. First operand 186 states and 436 transitions. Second operand 3 states. [2020-10-05 23:12:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:21,839 INFO L93 Difference]: Finished difference Result 203 states and 449 transitions. [2020-10-05 23:12:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:21,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-05 23:12:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:21,847 INFO L225 Difference]: With dead ends: 203 [2020-10-05 23:12:21,848 INFO L226 Difference]: Without dead ends: 158 [2020-10-05 23:12:21,849 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 [2020-10-05 23:12:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-05 23:12:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 144. [2020-10-05 23:12:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:12:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 325 transitions. [2020-10-05 23:12:21,866 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 325 transitions. Word has length 7 [2020-10-05 23:12:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:21,867 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 325 transitions. [2020-10-05 23:12:21,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 325 transitions. [2020-10-05 23:12:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:12:21,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:21,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:21,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:12:21,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash 188907911, now seen corresponding path program 1 times [2020-10-05 23:12:21,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:21,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901791530] [2020-10-05 23:12:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:21,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901791530] [2020-10-05 23:12:21,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:21,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:12:21,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510602611] [2020-10-05 23:12:21,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:12:21,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:21,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:12:21,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:12:21,947 INFO L87 Difference]: Start difference. First operand 144 states and 325 transitions. Second operand 3 states. [2020-10-05 23:12:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:21,969 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2020-10-05 23:12:21,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:12:21,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 23:12:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:21,972 INFO L225 Difference]: With dead ends: 135 [2020-10-05 23:12:21,973 INFO L226 Difference]: Without dead ends: 96 [2020-10-05 23:12:21,973 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 [2020-10-05 23:12:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-05 23:12:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-05 23:12:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-05 23:12:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2020-10-05 23:12:21,980 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2020-10-05 23:12:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:21,981 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2020-10-05 23:12:21,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:12:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-10-05 23:12:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:12:21,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:21,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:21,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:12:21,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:21,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1905704594, now seen corresponding path program 1 times [2020-10-05 23:12:21,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:21,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818653244] [2020-10-05 23:12:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818653244] [2020-10-05 23:12:22,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:12:22,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960203465] [2020-10-05 23:12:22,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:12:22,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:12:22,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:22,026 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2020-10-05 23:12:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,059 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2020-10-05 23:12:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:12:22,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 23:12:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,061 INFO L225 Difference]: With dead ends: 106 [2020-10-05 23:12:22,061 INFO L226 Difference]: Without dead ends: 82 [2020-10-05 23:12:22,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:22,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-05 23:12:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-05 23:12:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 23:12:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-05 23:12:22,069 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2020-10-05 23:12:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,069 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-05 23:12:22,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:12:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-05 23:12:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:12:22,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:22,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:22,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:12:22,071 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1601567116, now seen corresponding path program 2 times [2020-10-05 23:12:22,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:22,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646917061] [2020-10-05 23:12:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:22,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646917061] [2020-10-05 23:12:22,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:12:22,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:12:22,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586387881] [2020-10-05 23:12:22,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:12:22,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:22,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:12:22,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:22,107 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2020-10-05 23:12:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:22,120 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2020-10-05 23:12:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:12:22,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 23:12:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:22,121 INFO L225 Difference]: With dead ends: 36 [2020-10-05 23:12:22,121 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:12:22,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:12:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:12:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:12:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:12:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:12:22,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-05 23:12:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:22,123 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:12:22,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:12:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:12:22,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:12:22,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:12:22,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:12:22 BasicIcfg [2020-10-05 23:12:22,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:12:22,131 INFO L168 Benchmark]: Toolchain (without parser) took 3064.93 ms. Allocated memory was 141.0 MB in the beginning and 235.9 MB in the end (delta: 94.9 MB). Free memory was 102.5 MB in the beginning and 95.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 102.2 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,132 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.38 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 164.4 MB in the end (delta: -62.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.28 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 162.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,135 INFO L168 Benchmark]: Boogie Preprocessor took 26.73 ms. Allocated memory is still 203.9 MB. Free memory was 162.5 MB in the beginning and 161.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,136 INFO L168 Benchmark]: RCFGBuilder took 433.64 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 141.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,137 INFO L168 Benchmark]: TraceAbstraction took 1848.64 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 140.5 MB in the beginning and 95.2 MB in the end (delta: 45.3 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:22,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.38 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 164.4 MB in the end (delta: -62.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.28 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 162.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.73 ms. Allocated memory is still 203.9 MB. Free memory was 162.5 MB in the beginning and 161.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.64 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 141.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1848.64 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 140.5 MB in the beginning and 95.2 MB in the end (delta: 45.3 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 61 ProgramPointsBefore, 35 ProgramPointsAfterwards, 62 TransitionsBefore, 35 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 338 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1582 CheckedPairsTotal, 32 TotalNumberOfCompositions - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 141 SDtfs, 61 SDslu, 60 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...