/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:25:25,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:25:25,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:25:25,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:25:25,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:25:25,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:25:25,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:25:25,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:25:25,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:25:25,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:25:25,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:25:25,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:25:25,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:25:25,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:25:25,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:25:25,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:25:25,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:25:25,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:25:25,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:25:25,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:25:25,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:25:25,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:25:25,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:25:25,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:25:25,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:25:25,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:25:25,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:25:25,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:25:25,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:25:25,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:25:25,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:25:25,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:25:25,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:25:25,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:25:25,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:25:25,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:25:25,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 03:25:25,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:25:25,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:25:25,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:25:25,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:25:25,836 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:25:25,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:25:25,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:25:25,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:25:25,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:25:25,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:25:25,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:25:25,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:25:25,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:25:25,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:25:25,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:25:25,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:25:25,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:25:25,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:25:25,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:25:25,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:25:25,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:25:25,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:25:25,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:25:25,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:25:25,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:25:25,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:25:25,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:25:25,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:25:25,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:25:26,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:25:26,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:25:26,177 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:25:26,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:25:26,179 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:25:26,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-16 03:25:26,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af8b7488/e36d4cf35fa04c04b9930d3c4040d0fb/FLAGe22cc1e02 [2020-10-16 03:25:26,773 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:25:26,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-16 03:25:26,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af8b7488/e36d4cf35fa04c04b9930d3c4040d0fb/FLAGe22cc1e02 [2020-10-16 03:25:27,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af8b7488/e36d4cf35fa04c04b9930d3c4040d0fb [2020-10-16 03:25:27,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:25:27,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:25:27,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:25:27,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:25:27,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:25:27,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5387978b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27, skipping insertion in model container [2020-10-16 03:25:27,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:25:27,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:25:27,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:25:27,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:25:27,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:25:27,804 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:25:27,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27 WrapperNode [2020-10-16 03:25:27,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:25:27,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:25:27,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:25:27,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:25:27,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:25:27,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:25:27,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:25:27,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:25:27,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (1/1) ... [2020-10-16 03:25:27,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:25:27,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:25:27,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:25:27,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:25:27,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (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 [2020-10-16 03:25:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:25:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:25:27,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:25:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:25:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-10-16 03:25:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-10-16 03:25:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-10-16 03:25:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-10-16 03:25:27,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:25:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:25:27,973 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 03:25:28,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:25:28,465 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-16 03:25:28,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:25:28 BoogieIcfgContainer [2020-10-16 03:25:28,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:25:28,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:25:28,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:25:28,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:25:28,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:25:27" (1/3) ... [2020-10-16 03:25:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec4c58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:25:28, skipping insertion in model container [2020-10-16 03:25:28,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:25:27" (2/3) ... [2020-10-16 03:25:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec4c58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:25:28, skipping insertion in model container [2020-10-16 03:25:28,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:25:28" (3/3) ... [2020-10-16 03:25:28,477 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-10-16 03:25:28,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:25:28,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-16 03:25:28,499 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:25:28,528 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,528 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,528 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,529 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,529 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,530 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,530 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,530 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,531 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,531 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,531 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,531 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,535 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,536 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,536 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,536 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,542 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,542 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,543 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,543 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:25:28,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 03:25:28,592 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:25:28,593 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:25:28,593 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:25:28,593 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:25:28,593 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:25:28,593 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:25:28,594 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:25:28,594 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:25:28,610 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 111 places, 118 transitions, 258 flow [2020-10-16 03:25:28,669 INFO L129 PetriNetUnfolder]: 13/118 cut-off events. [2020-10-16 03:25:28,669 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:25:28,674 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. [2020-10-16 03:25:28,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 118 transitions, 258 flow [2020-10-16 03:25:28,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 238 flow [2020-10-16 03:25:28,695 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:25:28,699 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 110 transitions, 238 flow [2020-10-16 03:25:28,702 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 110 transitions, 238 flow [2020-10-16 03:25:28,703 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 238 flow [2020-10-16 03:25:28,763 INFO L129 PetriNetUnfolder]: 12/112 cut-off events. [2020-10-16 03:25:28,764 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:25:28,767 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 112 events. 12/112 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 62. Up to 3 conditions per place. [2020-10-16 03:25:28,770 INFO L117 LiptonReduction]: Number of co-enabled transitions 280 [2020-10-16 03:25:33,121 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-10-16 03:25:33,296 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-16 03:25:33,790 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-10-16 03:25:33,979 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-16 03:25:34,104 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-10-16 03:25:35,603 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-10-16 03:25:36,112 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-16 03:25:36,443 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-10-16 03:25:36,663 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-10-16 03:25:36,984 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-16 03:25:38,219 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 52 [2020-10-16 03:25:39,667 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 50 [2020-10-16 03:25:40,886 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-16 03:25:41,270 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-16 03:25:42,974 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-16 03:25:43,552 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-16 03:25:45,714 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-16 03:25:46,231 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-16 03:25:46,237 INFO L132 LiptonReduction]: Checked pairs total: 1083 [2020-10-16 03:25:46,237 INFO L134 LiptonReduction]: Total number of compositions: 122 [2020-10-16 03:25:46,241 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17552 [2020-10-16 03:25:46,250 INFO L129 PetriNetUnfolder]: 3/22 cut-off events. [2020-10-16 03:25:46,250 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:25:46,251 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:25:46,252 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:25:46,252 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:25:46,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:25:46,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1558954724, now seen corresponding path program 1 times [2020-10-16 03:25:46,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:25:46,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746966959] [2020-10-16 03:25:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:25:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:25:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:25:46,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746966959] [2020-10-16 03:25:46,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:25:46,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 03:25:46,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900110748] [2020-10-16 03:25:46,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 03:25:46,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:25:46,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 03:25:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 03:25:46,549 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 240 [2020-10-16 03:25:46,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 64 flow. Second operand 5 states. [2020-10-16 03:25:46,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:25:46,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 240 [2020-10-16 03:25:46,554 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:25:46,690 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2020-10-16 03:25:46,690 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:25:46,691 INFO L80 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 24 events. 2/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2020-10-16 03:25:46,693 INFO L132 encePairwiseOnDemand]: 232/240 looper letters, 4 selfloop transitions, 7 changer transitions 0/22 dead transitions. [2020-10-16 03:25:46,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 81 flow [2020-10-16 03:25:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 03:25:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 03:25:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 862 transitions. [2020-10-16 03:25:46,722 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7183333333333334 [2020-10-16 03:25:46,723 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 862 transitions. [2020-10-16 03:25:46,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 862 transitions. [2020-10-16 03:25:46,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:25:46,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 862 transitions. [2020-10-16 03:25:46,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 03:25:46,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 03:25:46,744 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 03:25:46,746 INFO L185 Difference]: Start difference. First operand has 26 places, 23 transitions, 64 flow. Second operand 5 states and 862 transitions. [2020-10-16 03:25:46,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 81 flow [2020-10-16 03:25:46,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 71 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 03:25:46,751 INFO L241 Difference]: Finished difference. Result has 26 places, 22 transitions, 63 flow [2020-10-16 03:25:46,754 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2020-10-16 03:25:46,755 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 03:25:46,755 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 63 flow [2020-10-16 03:25:46,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 03:25:46,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:25:46,755 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:25:46,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:25:46,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:25:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:25:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1339030936, now seen corresponding path program 1 times [2020-10-16 03:25:46,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:25:46,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779051225] [2020-10-16 03:25:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:25:46,782 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-16 03:25:46,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579174695] [2020-10-16 03:25:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown