/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-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 13:49:18,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 13:49:18,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 13:49:18,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 13:49:18,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 13:49:18,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 13:49:18,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 13:49:18,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 13:49:18,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 13:49:18,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 13:49:18,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 13:49:18,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 13:49:18,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 13:49:18,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 13:49:18,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 13:49:18,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 13:49:18,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 13:49:18,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 13:49:18,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 13:49:18,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 13:49:18,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 13:49:18,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 13:49:18,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 13:49:18,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 13:49:18,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 13:49:18,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 13:49:18,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 13:49:18,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 13:49:18,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 13:49:18,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 13:49:18,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 13:49:18,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 13:49:18,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 13:49:18,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 13:49:18,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 13:49:18,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 13:49:18,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 13:49:18,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 13:49:18,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 13:49:18,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 13:49:18,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 13:49:18,452 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 13:49:18,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 13:49:18,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 13:49:18,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 13:49:18,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 13:49:18,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 13:49:18,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 13:49:18,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 13:49:18,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 13:49:18,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 13:49:18,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 13:49:18,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 13:49:18,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 13:49:18,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 13:49:18,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 13:49:18,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 13:49:18,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 13:49:18,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 13:49:18,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 13:49:18,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 13:49:18,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 13:49:18,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 13:49:18,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 13:49:18,457 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 13:49:18,457 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 13:49:18,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 13:49:18,458 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 13:49:18,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 13:49:18,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 13:49:18,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 13:49:18,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 13:49:18,980 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 13:49:18,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-09-15 13:49:19,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d131c9b81/e55dd2973a074610ac1c20ceabcddc94/FLAGb84a093e9 [2020-09-15 13:49:19,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 13:49:19,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-09-15 13:49:19,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d131c9b81/e55dd2973a074610ac1c20ceabcddc94/FLAGb84a093e9 [2020-09-15 13:49:19,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d131c9b81/e55dd2973a074610ac1c20ceabcddc94 [2020-09-15 13:49:20,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 13:49:20,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 13:49:20,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 13:49:20,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 13:49:20,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 13:49:20,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:49:19" (1/1) ... [2020-09-15 13:49:20,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fae260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20, skipping insertion in model container [2020-09-15 13:49:20,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 01:49:19" (1/1) ... [2020-09-15 13:49:20,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 13:49:20,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 13:49:20,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:49:20,707 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 13:49:20,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 13:49:20,869 INFO L208 MainTranslator]: Completed translation [2020-09-15 13:49:20,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20 WrapperNode [2020-09-15 13:49:20,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 13:49:20,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 13:49:20,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 13:49:20,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 13:49:20,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 13:49:20,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 13:49:20,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 13:49:20,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 13:49:20,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... [2020-09-15 13:49:20,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 13:49:20,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 13:49:20,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 13:49:20,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 13:49:20,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-15 13:49:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-15 13:49:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 13:49:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 13:49:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 13:49:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-09-15 13:49:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-09-15 13:49:21,066 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-09-15 13:49:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-09-15 13:49:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 13:49:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 13:49:21,069 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 13:49:21,660 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 13:49:21,660 INFO L295 CfgBuilder]: Removed 26 assume(true) statements. [2020-09-15 13:49:21,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:49:21 BoogieIcfgContainer [2020-09-15 13:49:21,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 13:49:21,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 13:49:21,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 13:49:21,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 13:49:21,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 01:49:19" (1/3) ... [2020-09-15 13:49:21,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f1c301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:49:21, skipping insertion in model container [2020-09-15 13:49:21,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 01:49:20" (2/3) ... [2020-09-15 13:49:21,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f1c301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 01:49:21, skipping insertion in model container [2020-09-15 13:49:21,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 01:49:21" (3/3) ... [2020-09-15 13:49:21,678 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-09-15 13:49:21,691 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 13:49:21,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 13:49:21,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-15 13:49:21,704 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 13:49:21,742 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,742 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,743 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,743 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,743 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,744 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,744 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,744 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,744 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,745 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,745 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,745 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,750 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,750 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,750 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,751 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,754 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,754 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,754 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,755 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 13:49:21,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 13:49:21,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 13:49:21,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 13:49:21,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 13:49:21,809 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 13:49:21,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 13:49:21,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 13:49:21,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 13:49:21,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 13:49:21,830 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 118 transitions, 258 flow [2020-09-15 13:49:21,833 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 111 places, 118 transitions, 258 flow [2020-09-15 13:49:21,896 INFO L129 PetriNetUnfolder]: 13/118 cut-off events. [2020-09-15 13:49:21,896 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-15 13:49:21,902 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 118 events. 13/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-09-15 13:49:21,905 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 111 places, 118 transitions, 258 flow [2020-09-15 13:49:21,940 INFO L129 PetriNetUnfolder]: 13/118 cut-off events. [2020-09-15 13:49:21,941 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-15 13:49:21,942 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 118 events. 13/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-09-15 13:49:21,944 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 280 [2020-09-15 13:49:21,946 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 13:49:23,532 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-09-15 13:49:24,166 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-09-15 13:49:24,922 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-09-15 13:49:25,393 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-09-15 13:49:25,611 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-09-15 13:49:25,821 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-09-15 13:49:27,008 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-09-15 13:49:27,241 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-09-15 13:49:27,707 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-09-15 13:49:27,901 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-09-15 13:49:28,801 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-09-15 13:49:28,948 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-09-15 13:49:29,747 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-09-15 13:49:30,134 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-15 13:49:30,371 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-09-15 13:49:30,477 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-09-15 13:49:32,708 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-09-15 13:49:33,805 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 59 [2020-09-15 13:49:35,298 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-15 13:49:35,648 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-09-15 13:49:37,079 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-09-15 13:49:37,710 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-09-15 13:49:37,740 INFO L206 etLargeBlockEncoding]: Checked pairs total: 452 [2020-09-15 13:49:37,740 INFO L214 etLargeBlockEncoding]: Total number of compositions: 120 [2020-09-15 13:49:37,744 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2020-09-15 13:49:37,758 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 72 states. [2020-09-15 13:49:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-15 13:49:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:49:37,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:37,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:37,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:49:37,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:37,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2074023422, now seen corresponding path program 1 times [2020-09-15 13:49:37,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:37,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000273717] [2020-09-15 13:49:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 13:49:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 13:49:38,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000273717] [2020-09-15 13:49:38,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 13:49:38,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 13:49:38,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1604580892] [2020-09-15 13:49:38,193 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 13:49:38,209 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 13:49:38,257 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-09-15 13:49:38,257 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 13:49:38,503 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [263#(not (= dec_aThread1of1ForFork0_thidvar0 1))] [2020-09-15 13:49:38,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 13:49:38,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 13:49:38,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 13:49:38,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-15 13:49:38,528 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2020-09-15 13:49:38,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 13:49:38,753 INFO L93 Difference]: Finished difference Result 72 states and 152 transitions. [2020-09-15 13:49:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 13:49:38,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-15 13:49:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 13:49:38,777 INFO L225 Difference]: With dead ends: 72 [2020-09-15 13:49:38,777 INFO L226 Difference]: Without dead ends: 59 [2020-09-15 13:49:38,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 13:49:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-15 13:49:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-15 13:49:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-15 13:49:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 127 transitions. [2020-09-15 13:49:38,865 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 127 transitions. Word has length 15 [2020-09-15 13:49:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 13:49:38,865 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 127 transitions. [2020-09-15 13:49:38,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 13:49:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 127 transitions. [2020-09-15 13:49:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 13:49:38,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 13:49:38,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 13:49:38,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 13:49:38,874 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 13:49:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 13:49:38,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2045395232, now seen corresponding path program 1 times [2020-09-15 13:49:38,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 13:49:38,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637601292] [2020-09-15 13:49:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 13:49:38,919 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-15 13:49:38,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846712993] [2020-09-15 13:49:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true