/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:57:46,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:57:46,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:57:46,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:57:46,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:57:47,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:57:47,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:57:47,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:57:47,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:57:47,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:57:47,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:57:47,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:57:47,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:57:47,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:57:47,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:57:47,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:57:47,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:57:47,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:57:47,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:57:47,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:57:47,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:57:47,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:57:47,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:57:47,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:57:47,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:57:47,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:57:47,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:57:47,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:57:47,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:57:47,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:57:47,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:57:47,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:57:47,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:57:47,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:57:47,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:57:47,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:57:47,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:57:47,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:57:47,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:57:47,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:57:47,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:57:47,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 16:57:47,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:57:47,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:57:47,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:57:47,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:57:47,113 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:57:47,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:57:47,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:57:47,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:57:47,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:57:47,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:57:47,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:57:47,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:57:47,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:57:47,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:57:47,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:57:47,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:57:47,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:57:47,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:57:47,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:57:47,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:57:47,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:57:47,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:57:47,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:57:47,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:57:47,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:57:47,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:57:47,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:57:47,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 16:57:47,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 16:57:47,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:57:47,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:57:47,417 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:57:47,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:57:47,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:57:47,423 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:57:47,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-11 16:57:47,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b3ea856/d5dcee0fd0a3492099b718e21dfb21c5/FLAGcb056aa54 [2020-10-11 16:57:48,059 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:57:48,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-10-11 16:57:48,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b3ea856/d5dcee0fd0a3492099b718e21dfb21c5/FLAGcb056aa54 [2020-10-11 16:57:48,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3b3ea856/d5dcee0fd0a3492099b718e21dfb21c5 [2020-10-11 16:57:48,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:57:48,385 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:57:48,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:57:48,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:57:48,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:57:48,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:57:48" (1/1) ... [2020-10-11 16:57:48,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de01462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:48, skipping insertion in model container [2020-10-11 16:57:48,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:57:48" (1/1) ... [2020-10-11 16:57:48,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:57:48,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:57:48,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:57:48,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:57:48,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:57:49,056 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:57:49,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49 WrapperNode [2020-10-11 16:57:49,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:57:49,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:57:49,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:57:49,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:57:49,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:57:49,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:57:49,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:57:49,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:57:49,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (1/1) ... [2020-10-11 16:57:49,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:57:49,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:57:49,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:57:49,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:57:49,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (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 [2020-10-11 16:57:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:57:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:57:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:57:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:57:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-10-11 16:57:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-10-11 16:57:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-10-11 16:57:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-10-11 16:57:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:57:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:57:49,214 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:57:49,743 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:57:49,743 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-11 16:57:49,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:57:49 BoogieIcfgContainer [2020-10-11 16:57:49,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:57:49,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:57:49,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:57:49,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:57:49,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:57:48" (1/3) ... [2020-10-11 16:57:49,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba6faa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:57:49, skipping insertion in model container [2020-10-11 16:57:49,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:57:49" (2/3) ... [2020-10-11 16:57:49,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba6faa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:57:49, skipping insertion in model container [2020-10-11 16:57:49,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:57:49" (3/3) ... [2020-10-11 16:57:49,755 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-10-11 16:57:49,768 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:57:49,779 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-11 16:57:49,780 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:57:49,828 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,829 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,829 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,829 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,830 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,831 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,832 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,832 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,832 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,834 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,841 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,841 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,846 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,847 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,847 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,847 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,852 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,852 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,853 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,853 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:57:49,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 16:57:49,907 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:57:49,907 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 16:57:49,907 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:57:49,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:57:49,908 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:57:49,908 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:57:49,908 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:57:49,908 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:57:49,924 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 111 places, 118 transitions, 258 flow [2020-10-11 16:57:49,982 INFO L129 PetriNetUnfolder]: 13/118 cut-off events. [2020-10-11 16:57:49,982 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:57:49,987 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. [2020-10-11 16:57:49,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 118 transitions, 258 flow [2020-10-11 16:57:49,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 238 flow [2020-10-11 16:57:50,024 INFO L129 PetriNetUnfolder]: 11/99 cut-off events. [2020-10-11 16:57:50,024 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:57:50,025 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:50,026 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:50,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2016127771, now seen corresponding path program 1 times [2020-10-11 16:57:50,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:50,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190500058] [2020-10-11 16:57:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:57:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:57:50,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190500058] [2020-10-11 16:57:50,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:57:50,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 16:57:50,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282202499] [2020-10-11 16:57:50,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 16:57:50,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:57:50,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 16:57:50,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 16:57:50,324 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 118 [2020-10-11 16:57:50,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 238 flow. Second operand 2 states. [2020-10-11 16:57:50,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 16:57:50,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 118 [2020-10-11 16:57:50,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 16:57:50,366 INFO L129 PetriNetUnfolder]: 3/103 cut-off events. [2020-10-11 16:57:50,367 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:57:50,367 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 103 events. 3/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 9/103 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2020-10-11 16:57:50,369 INFO L132 encePairwiseOnDemand]: 109/118 looper letters, 0 selfloop transitions, 0 changer transitions 5/101 dead transitions. [2020-10-11 16:57:50,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 220 flow [2020-10-11 16:57:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 16:57:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-11 16:57:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2020-10-11 16:57:50,385 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9533898305084746 [2020-10-11 16:57:50,386 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 225 transitions. [2020-10-11 16:57:50,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 225 transitions. [2020-10-11 16:57:50,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 16:57:50,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 225 transitions. [2020-10-11 16:57:50,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-11 16:57:50,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-11 16:57:50,406 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-11 16:57:50,409 INFO L185 Difference]: Start difference. First operand has 104 places, 110 transitions, 238 flow. Second operand 2 states and 225 transitions. [2020-10-11 16:57:50,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 220 flow [2020-10-11 16:57:50,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 16:57:50,419 INFO L241 Difference]: Finished difference. Result has 101 places, 96 transitions, 198 flow [2020-10-11 16:57:50,422 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2020-10-11 16:57:50,423 INFO L341 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2020-10-11 16:57:50,423 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 198 flow [2020-10-11 16:57:50,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 16:57:50,423 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 16:57:50,424 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:57:50,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:57:50,424 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 16:57:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:57:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash 73966807, now seen corresponding path program 1 times [2020-10-11 16:57:50,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:57:50,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366567325] [2020-10-11 16:57:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:57:50,467 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-11 16:57:50,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663701286] [2020-10-11 16:57:50,468 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