/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:06:02,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:06:02,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:06:02,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:06:02,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:06:02,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:06:02,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:06:02,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:06:02,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:06:02,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:06:02,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:06:02,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:06:02,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:06:02,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:06:02,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:06:02,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:06:02,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:06:02,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:06:02,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:06:02,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:06:02,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:06:02,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:06:02,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:06:02,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:06:02,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:06:02,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:06:02,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:06:02,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:06:02,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:06:02,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:06:02,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:06:02,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:06:02,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:06:02,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:06:02,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:06:02,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:06:02,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:06:02,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:06:02,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:06:02,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:06:02,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:06:02,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:06:02,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:06:02,993 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:06:02,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:06:02,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:06:02,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:06:02,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:06:02,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:06:02,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:06:02,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:06:02,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:06:02,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:06:02,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:06:02,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:06:02,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:06:02,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:06:02,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:06:02,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:06:02,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:06:02,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:06:02,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:06:02,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:06:02,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:06:02,997 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:06:02,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:06:02,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:06:02,998 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:06:03,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:06:03,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:06:03,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:06:03,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:06:03,299 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:06:03,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-10-06 01:06:03,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc704652/18b459ccbfad4b5dbaf16a063a5744a6/FLAG1bc671ed2 [2020-10-06 01:06:03,912 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:06:03,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-10-06 01:06:03,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc704652/18b459ccbfad4b5dbaf16a063a5744a6/FLAG1bc671ed2 [2020-10-06 01:06:04,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc704652/18b459ccbfad4b5dbaf16a063a5744a6 [2020-10-06 01:06:04,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:06:04,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:06:04,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:06:04,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:06:04,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:06:04,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:04,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f5a8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04, skipping insertion in model container [2020-10-06 01:06:04,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:04,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:06:04,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:06:04,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:06:04,811 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:06:04,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:06:04,966 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:06:04,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04 WrapperNode [2020-10-06 01:06:04,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:06:04,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:06:04,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:06:04,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:06:04,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:04,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:06:05,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:06:05,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:06:05,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:06:05,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (1/1) ... [2020-10-06 01:06:05,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:06:05,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:06:05,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:06:05,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:06:05,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (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 [2020-10-06 01:06:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:06:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:06:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:06:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:06:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:06:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:06:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:06:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:06:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:06:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:06:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:06:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:06:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:06:05,111 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:06:05,440 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:06:05,441 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:06:05,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:06:05 BoogieIcfgContainer [2020-10-06 01:06:05,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:06:05,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:06:05,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:06:05,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:06:05,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:06:04" (1/3) ... [2020-10-06 01:06:05,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f783d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:06:05, skipping insertion in model container [2020-10-06 01:06:05,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:06:04" (2/3) ... [2020-10-06 01:06:05,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f783d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:06:05, skipping insertion in model container [2020-10-06 01:06:05,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:06:05" (3/3) ... [2020-10-06 01:06:05,452 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-10-06 01:06:05,464 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:06:05,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:06:05,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:06:05,473 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:06:05,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,519 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,519 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,520 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,520 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,547 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,548 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,548 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:06:05,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:06:05,594 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:06:05,594 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:06:05,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:06:05,595 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:06:05,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:06:05,595 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:06:05,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:06:05,596 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:06:05,611 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-06 01:06:05,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-06 01:06:05,659 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-06 01:06:05,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:06:05,665 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-06 01:06:05,668 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-06 01:06:05,701 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-06 01:06:05,701 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:06:05,705 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-06 01:06:05,707 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-10-06 01:06:05,712 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:06:06,975 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-10-06 01:06:06,975 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-10-06 01:06:06,979 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:06:07,018 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-06 01:06:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-06 01:06:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:06:07,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:06:07,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:06:07,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:06:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:06:07,039 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-06 01:06:07,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:06:07,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462250007] [2020-10-06 01:06:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:06:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:06:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:06:07,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462250007] [2020-10-06 01:06:07,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:06:07,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:06:07,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [642239854] [2020-10-06 01:06:07,245 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:06:07,247 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:06:07,261 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:06:07,261 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:06:07,266 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:06:07,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 01:06:07,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:06:07,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 01:06:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:06:07,284 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-06 01:06:07,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:06:07,302 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-06 01:06:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 01:06:07,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-06 01:06:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:06:07,318 INFO L225 Difference]: With dead ends: 274 [2020-10-06 01:06:07,319 INFO L226 Difference]: Without dead ends: 226 [2020-10-06 01:06:07,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 01:06:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-06 01:06:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-06 01:06:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-06 01:06:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-06 01:06:07,392 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-06 01:06:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:06:07,393 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-06 01:06:07,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 01:06:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-06 01:06:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:06:07,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:06:07,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:06:07,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:06:07,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:06:07,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:06:07,397 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-06 01:06:07,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:06:07,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846574061] [2020-10-06 01:06:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:06:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:06:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:06:07,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846574061] [2020-10-06 01:06:07,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:06:07,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:06:07,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [534896036] [2020-10-06 01:06:07,544 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:06:07,545 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:06:07,546 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:06:07,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:06:07,547 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:06:07,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:06:07,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:06:07,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:06:07,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:06:07,550 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-06 01:06:07,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:06:07,582 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-10-06 01:06:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:06:07,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 01:06:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:06:07,585 INFO L225 Difference]: With dead ends: 262 [2020-10-06 01:06:07,585 INFO L226 Difference]: Without dead ends: 214 [2020-10-06 01:06:07,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:06:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-06 01:06:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-06 01:06:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-06 01:06:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-10-06 01:06:07,607 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-10-06 01:06:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:06:07,607 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-10-06 01:06:07,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:06:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-10-06 01:06:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:06:07,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:06:07,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:06:07,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:06:07,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:06:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:06:07,610 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-10-06 01:06:07,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:06:07,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826819568] [2020-10-06 01:06:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:06:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:06:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:06:07,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826819568] [2020-10-06 01:06:07,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:06:07,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:06:07,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1565862458] [2020-10-06 01:06:07,744 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:06:07,745 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:06:07,747 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-06 01:06:07,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:06:07,790 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:06:07,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:06:07,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:06:07,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:06:07,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:06:07,791 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-10-06 01:06:07,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:06:07,850 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-10-06 01:06:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:06:07,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-06 01:06:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:06:07,852 INFO L225 Difference]: With dead ends: 232 [2020-10-06 01:06:07,853 INFO L226 Difference]: Without dead ends: 196 [2020-10-06 01:06:07,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:06:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-06 01:06:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-10-06 01:06:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-06 01:06:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-10-06 01:06:07,868 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-10-06 01:06:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:06:07,868 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-10-06 01:06:07,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:06:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-10-06 01:06:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:06:07,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:06:07,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:06:07,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:06:07,870 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:06:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:06:07,871 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-10-06 01:06:07,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:06:07,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668817806] [2020-10-06 01:06:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:06:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:06:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:06:07,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668817806] [2020-10-06 01:06:07,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:06:07,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:06:07,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1085832309] [2020-10-06 01:06:07,992 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:06:07,994 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:06:07,996 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-10-06 01:06:07,996 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:06:08,032 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:06:08,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:06:08,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:06:08,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:06:08,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:06:08,034 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-10-06 01:06:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:06:08,149 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-10-06 01:06:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-06 01:06:08,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-06 01:06:08,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:06:08,151 INFO L225 Difference]: With dead ends: 255 [2020-10-06 01:06:08,151 INFO L226 Difference]: Without dead ends: 150 [2020-10-06 01:06:08,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:06:08,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-06 01:06:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-06 01:06:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-06 01:06:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-06 01:06:08,173 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-06 01:06:08,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:06:08,174 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-06 01:06:08,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:06:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-06 01:06:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:06:08,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:06:08,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:06:08,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:06:08,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:06:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:06:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-06 01:06:08,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:06:08,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955780920] [2020-10-06 01:06:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:06:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:06:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:06:08,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955780920] [2020-10-06 01:06:08,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:06:08,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:06:08,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1236160482] [2020-10-06 01:06:08,301 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:06:08,302 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:06:08,306 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-10-06 01:06:08,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:06:08,336 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:06:08,370 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:06:08,386 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:06:08,410 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:06:08,429 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:06:08,467 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:06:08,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:06:08,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:06:08,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:06:08,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:06:08,468 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-06 01:06:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:06:08,493 INFO L93 Difference]: Finished difference Result 106 states and 252 transitions. [2020-10-06 01:06:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:06:08,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:06:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:06:08,494 INFO L225 Difference]: With dead ends: 106 [2020-10-06 01:06:08,494 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:06:08,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:06:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:06:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:06:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:06:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:06:08,496 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-06 01:06:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:06:08,496 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:06:08,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:06:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:06:08,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:06:08,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:06:08,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:06:08 BasicIcfg [2020-10-06 01:06:08,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:06:08,503 INFO L168 Benchmark]: Toolchain (without parser) took 4261.19 ms. Allocated memory was 138.9 MB in the beginning and 249.6 MB in the end (delta: 110.6 MB). Free memory was 100.4 MB in the beginning and 92.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,504 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.47 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 156.2 MB in the end (delta: -56.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.15 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,507 INFO L168 Benchmark]: Boogie Preprocessor took 23.82 ms. Allocated memory is still 201.9 MB. Free memory was 154.2 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,508 INFO L168 Benchmark]: RCFGBuilder took 403.10 ms. Allocated memory is still 201.9 MB. Free memory was 152.8 MB in the beginning and 130.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,509 INFO L168 Benchmark]: TraceAbstraction took 3055.41 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 130.6 MB in the beginning and 92.7 MB in the end (delta: 38.0 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:06:08,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.47 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 156.2 MB in the end (delta: -56.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.15 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.82 ms. Allocated memory is still 201.9 MB. Free memory was 154.2 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 403.10 ms. Allocated memory is still 201.9 MB. Free memory was 152.8 MB in the beginning and 130.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3055.41 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 130.6 MB in the beginning and 92.7 MB in the end (delta: 38.0 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 91 SDtfs, 107 SDslu, 151 SDs, 0 SdLazy, 93 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...