/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-wmm/safe037_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:13:24,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:13:24,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:13:24,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:13:24,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:13:24,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:13:24,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:13:24,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:13:24,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:13:24,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:13:24,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:13:24,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:13:24,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:13:24,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:13:24,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:13:24,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:13:24,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:13:24,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:13:24,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:13:24,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:13:24,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:13:24,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:13:24,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:13:24,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:13:24,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 18:13:24,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:13:24,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:13:24,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:13:24,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:13:24,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:13:24,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:13:24,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:13:24,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:13:24,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:13:24,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:13:24,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:13:24,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:13:25,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:13:25,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:13:25,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:13:25,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:13:25,008 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:13:25,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:13:25,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:13:25,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:13:25,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:13:25,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:13:25,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:13:25,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:13:25,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:13:25,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:13:25,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:13:25,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:13:25,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:13:25,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:13:25,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:13:25,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:13:25,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:13:25,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:13:25,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:13:25,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:13:25,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:13:25,014 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:13:25,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:13:25,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:13:25,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:13:25,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:13:25,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:13:25,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:13:25,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:13:25,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:13:25,354 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:13:25,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-10-09 18:13:25,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47bd3bdbc/6d62508c26d64a739206684bb3ecd159/FLAG30339af4f [2020-10-09 18:13:25,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:13:25,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-10-09 18:13:25,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47bd3bdbc/6d62508c26d64a739206684bb3ecd159/FLAG30339af4f [2020-10-09 18:13:26,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47bd3bdbc/6d62508c26d64a739206684bb3ecd159 [2020-10-09 18:13:26,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:13:26,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:13:26,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:13:26,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:13:26,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:13:26,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447fadbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26, skipping insertion in model container [2020-10-09 18:13:26,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:13:26,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:13:26,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:13:26,791 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:13:26,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:13:26,919 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:13:26,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26 WrapperNode [2020-10-09 18:13:26,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:13:26,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:13:26,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:13:26,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:13:26,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:13:26,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:13:26,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:13:26,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:13:26,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:26,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (1/1) ... [2020-10-09 18:13:27,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:13:27,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:13:27,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:13:27,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:13:27,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (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 [2020-10-09 18:13:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:13:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:13:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:13:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:13:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:13:27,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:13:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:13:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:13:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:13:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:13:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:13:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:13:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:13:27,069 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:13:27,441 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:13:27,442 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:13:27,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:13:27 BoogieIcfgContainer [2020-10-09 18:13:27,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:13:27,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:13:27,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:13:27,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:13:27,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:13:26" (1/3) ... [2020-10-09 18:13:27,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b62505b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:13:27, skipping insertion in model container [2020-10-09 18:13:27,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:26" (2/3) ... [2020-10-09 18:13:27,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b62505b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:13:27, skipping insertion in model container [2020-10-09 18:13:27,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:13:27" (3/3) ... [2020-10-09 18:13:27,452 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_rmo.opt.i [2020-10-09 18:13:27,464 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:13:27,471 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:13:27,474 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:13:27,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,514 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,514 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,514 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,515 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,515 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,516 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,516 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,517 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,531 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:13:27,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 18:13:27,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:13:27,570 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:13:27,570 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:13:27,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:13:27,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:13:27,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:13:27,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:13:27,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:13:27,584 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-09 18:13:27,628 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-09 18:13:27,628 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:13:27,635 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 18:13:27,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-09 18:13:27,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-09 18:13:27,665 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-09 18:13:27,665 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:13:27,665 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:13:27,666 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] [2020-10-09 18:13:27,667 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:13:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:13:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash 147192619, now seen corresponding path program 1 times [2020-10-09 18:13:27,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:13:27,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731441295] [2020-10-09 18:13:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:13:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:13:27,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 18:13:27,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:13:27,872 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:13:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:27,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:13:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:27,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731441295] [2020-10-09 18:13:27,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:13:27,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:13:27,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741475850] [2020-10-09 18:13:27,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:13:27,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:13:27,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:13:27,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:13:28,100 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-09 18:13:28,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand 8 states. [2020-10-09 18:13:28,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:13:28,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-09 18:13:28,104 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:13:28,402 INFO L129 PetriNetUnfolder]: 79/241 cut-off events. [2020-10-09 18:13:28,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:13:28,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 241 events. 79/241 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1042 event pairs, 0 based on Foata normal form. 12/246 useless extension candidates. Maximal degree in co-relation 378. Up to 36 conditions per place. [2020-10-09 18:13:28,407 INFO L132 encePairwiseOnDemand]: 60/71 looper letters, 10 selfloop transitions, 9 changer transitions 36/100 dead transitions. [2020-10-09 18:13:28,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 319 flow [2020-10-09 18:13:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 18:13:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 18:13:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 816 transitions. [2020-10-09 18:13:28,427 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8840736728060672 [2020-10-09 18:13:28,428 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 816 transitions. [2020-10-09 18:13:28,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 816 transitions. [2020-10-09 18:13:28,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:13:28,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 816 transitions. [2020-10-09 18:13:28,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 18:13:28,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 18:13:28,449 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 18:13:28,452 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 13 states and 816 transitions. [2020-10-09 18:13:28,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 319 flow [2020-10-09 18:13:28,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 18:13:28,465 INFO L241 Difference]: Finished difference. Result has 84 places, 61 transitions, 214 flow [2020-10-09 18:13:28,470 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=214, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2020-10-09 18:13:28,470 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2020-10-09 18:13:28,471 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 214 flow [2020-10-09 18:13:28,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:13:28,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:13:28,474 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] [2020-10-09 18:13:28,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:13:28,688 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:13:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:13:28,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2024250415, now seen corresponding path program 1 times [2020-10-09 18:13:28,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:13:28,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598908613] [2020-10-09 18:13:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:13:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:13:28,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 18:13:28,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:13:28,797 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:13:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:28,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:13:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:28,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598908613] [2020-10-09 18:13:28,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:13:28,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 18:13:28,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801904174] [2020-10-09 18:13:28,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 18:13:28,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:13:28,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 18:13:28,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 18:13:28,991 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-09 18:13:28,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 214 flow. Second operand 10 states. [2020-10-09 18:13:28,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:13:28,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-09 18:13:28,992 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:13:29,168 INFO L129 PetriNetUnfolder]: 16/101 cut-off events. [2020-10-09 18:13:29,169 INFO L130 PetriNetUnfolder]: For 354/368 co-relation queries the response was YES. [2020-10-09 18:13:29,170 INFO L80 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 101 events. 16/101 cut-off events. For 354/368 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 208 event pairs, 0 based on Foata normal form. 12/112 useless extension candidates. Maximal degree in co-relation 293. Up to 27 conditions per place. [2020-10-09 18:13:29,171 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 4 selfloop transitions, 12 changer transitions 13/74 dead transitions. [2020-10-09 18:13:29,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 397 flow [2020-10-09 18:13:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 18:13:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 18:13:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2020-10-09 18:13:29,174 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8565941101152369 [2020-10-09 18:13:29,175 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2020-10-09 18:13:29,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2020-10-09 18:13:29,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:13:29,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2020-10-09 18:13:29,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 18:13:29,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 18:13:29,180 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 18:13:29,180 INFO L185 Difference]: Start difference. First operand has 84 places, 61 transitions, 214 flow. Second operand 11 states and 669 transitions. [2020-10-09 18:13:29,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 397 flow [2020-10-09 18:13:29,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 311 flow, removed 38 selfloop flow, removed 7 redundant places. [2020-10-09 18:13:29,187 INFO L241 Difference]: Finished difference. Result has 85 places, 61 transitions, 224 flow [2020-10-09 18:13:29,188 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2020-10-09 18:13:29,189 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2020-10-09 18:13:29,189 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 224 flow [2020-10-09 18:13:29,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 18:13:29,189 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:13:29,189 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] [2020-10-09 18:13:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:13:29,402 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:13:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:13:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash -728541331, now seen corresponding path program 1 times [2020-10-09 18:13:29,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:13:29,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716836609] [2020-10-09 18:13:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:13:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:13:29,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:13:29,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:13:29,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:13:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:29,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:13:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:29,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716836609] [2020-10-09 18:13:29,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:13:29,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:13:29,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637463641] [2020-10-09 18:13:29,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:13:29,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:13:29,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:13:29,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:13:29,863 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 18:13:29,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 224 flow. Second operand 9 states. [2020-10-09 18:13:29,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:13:29,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 18:13:29,864 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:13:29,948 INFO L129 PetriNetUnfolder]: 10/107 cut-off events. [2020-10-09 18:13:29,948 INFO L130 PetriNetUnfolder]: For 108/120 co-relation queries the response was YES. [2020-10-09 18:13:29,949 INFO L80 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 107 events. 10/107 cut-off events. For 108/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 0 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 212. Up to 21 conditions per place. [2020-10-09 18:13:29,950 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 9 selfloop transitions, 1 changer transitions 5/66 dead transitions. [2020-10-09 18:13:29,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 66 transitions, 264 flow [2020-10-09 18:13:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:13:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:13:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2020-10-09 18:13:29,953 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2020-10-09 18:13:29,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2020-10-09 18:13:29,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2020-10-09 18:13:29,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:13:29,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2020-10-09 18:13:29,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:13:29,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:13:29,957 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:13:29,957 INFO L185 Difference]: Start difference. First operand has 85 places, 61 transitions, 224 flow. Second operand 7 states and 429 transitions. [2020-10-09 18:13:29,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 66 transitions, 264 flow [2020-10-09 18:13:29,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 188 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-09 18:13:29,961 INFO L241 Difference]: Finished difference. Result has 77 places, 61 transitions, 161 flow [2020-10-09 18:13:29,961 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2020-10-09 18:13:29,962 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2020-10-09 18:13:29,962 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 161 flow [2020-10-09 18:13:29,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:13:29,962 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:13:29,962 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] [2020-10-09 18:13:30,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:13:30,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:13:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:13:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1730029587, now seen corresponding path program 2 times [2020-10-09 18:13:30,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:13:30,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581918214] [2020-10-09 18:13:30,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:13:30,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 18:13:30,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 18:13:30,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:13:30,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:13:30,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:13:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:30,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:13:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:30,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581918214] [2020-10-09 18:13:30,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:13:30,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:13:30,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336660734] [2020-10-09 18:13:30,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:13:30,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:13:30,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:13:30,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:13:30,583 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 18:13:30,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 161 flow. Second operand 9 states. [2020-10-09 18:13:30,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:13:30,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 18:13:30,584 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:13:30,652 INFO L129 PetriNetUnfolder]: 12/125 cut-off events. [2020-10-09 18:13:30,652 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-09 18:13:30,653 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 125 events. 12/125 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 348 event pairs, 0 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 185. Up to 16 conditions per place. [2020-10-09 18:13:30,654 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 9 selfloop transitions, 1 changer transitions 5/66 dead transitions. [2020-10-09 18:13:30,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 207 flow [2020-10-09 18:13:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:13:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:13:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2020-10-09 18:13:30,656 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2020-10-09 18:13:30,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2020-10-09 18:13:30,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2020-10-09 18:13:30,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:13:30,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2020-10-09 18:13:30,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:13:30,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:13:30,660 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:13:30,660 INFO L185 Difference]: Start difference. First operand has 77 places, 61 transitions, 161 flow. Second operand 7 states and 429 transitions. [2020-10-09 18:13:30,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 207 flow [2020-10-09 18:13:30,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 192 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-09 18:13:30,663 INFO L241 Difference]: Finished difference. Result has 79 places, 61 transitions, 165 flow [2020-10-09 18:13:30,663 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2020-10-09 18:13:30,664 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2020-10-09 18:13:30,664 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 165 flow [2020-10-09 18:13:30,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:13:30,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:13:30,664 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] [2020-10-09 18:13:30,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:13:30,885 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:13:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:13:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1883727063, now seen corresponding path program 3 times [2020-10-09 18:13:30,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:13:30,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549338379] [2020-10-09 18:13:30,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 18:13:30,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-09 18:13:30,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 18:13:30,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:13:30,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:13:31,022 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:13:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:31,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:13:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:13:31,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549338379] [2020-10-09 18:13:31,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:13:31,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:13:31,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61838279] [2020-10-09 18:13:31,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:13:31,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:13:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:13:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:13:31,369 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-09 18:13:31,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 165 flow. Second operand 9 states. [2020-10-09 18:13:31,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:13:31,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-09 18:13:31,370 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:13:31,434 INFO L129 PetriNetUnfolder]: 9/116 cut-off events. [2020-10-09 18:13:31,434 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 18:13:31,435 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 116 events. 9/116 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 0 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 177. Up to 14 conditions per place. [2020-10-09 18:13:31,435 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-09 18:13:31,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 181 flow [2020-10-09 18:13:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:13:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:13:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2020-10-09 18:13:31,438 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8531187122736419 [2020-10-09 18:13:31,438 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2020-10-09 18:13:31,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2020-10-09 18:13:31,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:13:31,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2020-10-09 18:13:31,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:13:31,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:13:31,442 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:13:31,442 INFO L185 Difference]: Start difference. First operand has 79 places, 61 transitions, 165 flow. Second operand 7 states and 424 transitions. [2020-10-09 18:13:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 181 flow [2020-10-09 18:13:31,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-09 18:13:31,444 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-09 18:13:31,444 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-09 18:13:31,445 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2020-10-09 18:13:31,445 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-09 18:13:31,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:13:31,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:13:31,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:13:31 BasicIcfg [2020-10-09 18:13:31,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:13:31,683 INFO L168 Benchmark]: Toolchain (without parser) took 5488.29 ms. Allocated memory was 253.8 MB in the beginning and 424.1 MB in the end (delta: 170.4 MB). Free memory was 210.2 MB in the beginning and 364.3 MB in the end (delta: -154.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 14.2 GB. [2020-10-09 18:13:31,684 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:13:31,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.56 ms. Allocated memory was 253.8 MB in the beginning and 320.9 MB in the end (delta: 67.1 MB). Free memory was 210.2 MB in the beginning and 273.6 MB in the end (delta: -63.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:13:31,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.72 ms. Allocated memory is still 320.9 MB. Free memory was 273.6 MB in the beginning and 271.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:13:31,687 INFO L168 Benchmark]: Boogie Preprocessor took 27.34 ms. Allocated memory is still 320.9 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:13:31,688 INFO L168 Benchmark]: RCFGBuilder took 443.54 ms. Allocated memory is still 320.9 MB. Free memory was 271.0 MB in the beginning and 246.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:13:31,688 INFO L168 Benchmark]: TraceAbstraction took 4227.93 ms. Allocated memory was 320.9 MB in the beginning and 424.1 MB in the end (delta: 103.3 MB). Free memory was 246.7 MB in the beginning and 364.3 MB in the end (delta: -117.6 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:13:31,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 731.56 ms. Allocated memory was 253.8 MB in the beginning and 320.9 MB in the end (delta: 67.1 MB). Free memory was 210.2 MB in the beginning and 273.6 MB in the end (delta: -63.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.72 ms. Allocated memory is still 320.9 MB. Free memory was 273.6 MB in the beginning and 271.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.34 ms. Allocated memory is still 320.9 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 443.54 ms. Allocated memory is still 320.9 MB. Free memory was 271.0 MB in the beginning and 246.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4227.93 ms. Allocated memory was 320.9 MB in the beginning and 424.1 MB in the end (delta: 103.3 MB). Free memory was 246.7 MB in the beginning and 364.3 MB in the end (delta: -117.6 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 206 SDslu, 377 SDs, 0 SdLazy, 380 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 402 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 448 ConstructedInterpolants, 0 QuantifiedInterpolants, 48100 SizeOfPredicates, 33 NumberOfNonLiveVariables, 580 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...