/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:09:47,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:09:47,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:09:47,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:09:47,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:09:47,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:09:47,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:09:47,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:09:47,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:09:47,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:09:47,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:09:47,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:09:47,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:09:47,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:09:47,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:09:47,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:09:47,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:09:47,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:09:47,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:09:47,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:09:47,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:09:47,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:09:47,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:09:47,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:09:47,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 23:09:47,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 23:09:47,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 23:09:47,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 23:09:47,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 23:09:47,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 23:09:47,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:09:47,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:09:47,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:09:47,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:09:47,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:09:47,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:09:47,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:09:47,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:09:47,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:09:47,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:09:47,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:09:47,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 23:09:47,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:09:47,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:09:47,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:09:47,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:09:47,497 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:09:47,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:09:47,498 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:09:47,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:09:47,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:09:47,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:09:47,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:09:47,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:09:47,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:09:47,500 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:09:47,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:09:47,501 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:09:47,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:09:47,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:09:47,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:09:47,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:09:47,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:09:47,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:09:47,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:09:47,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:09:47,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:09:47,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:09:47,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:09:47,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 23:09:47,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:09:47,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:09:47,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:09:47,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:09:47,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:09:47,798 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:09:47,798 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:09:47,799 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i [2019-12-18 23:09:47,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7454ae8d8/612822b926cb4aea8a09481ce4def321/FLAG35705127f [2019-12-18 23:09:48,422 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:09:48,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i [2019-12-18 23:09:48,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7454ae8d8/612822b926cb4aea8a09481ce4def321/FLAG35705127f [2019-12-18 23:09:48,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7454ae8d8/612822b926cb4aea8a09481ce4def321 [2019-12-18 23:09:48,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:09:48,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:09:48,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:09:48,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:09:48,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:09:48,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:09:48" (1/1) ... [2019-12-18 23:09:48,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579cb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:48, skipping insertion in model container [2019-12-18 23:09:48,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:09:48" (1/1) ... [2019-12-18 23:09:48,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:09:48,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:09:49,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:09:49,313 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:09:49,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:09:49,482 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:09:49,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49 WrapperNode [2019-12-18 23:09:49,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:09:49,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:09:49,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:09:49,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:09:49,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:09:49,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:09:49,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:09:49,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:09:49,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... [2019-12-18 23:09:49,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:09:49,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:09:49,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:09:49,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:09:49,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:09:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:09:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 23:09:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:09:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:09:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 23:09:49,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 23:09:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 23:09:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 23:09:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 23:09:49,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 23:09:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 23:09:49,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:09:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:09:49,642 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:09:50,022 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:09:50,022 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 23:09:50,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:09:50 BoogieIcfgContainer [2019-12-18 23:09:50,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:09:50,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:09:50,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:09:50,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:09:50,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:09:48" (1/3) ... [2019-12-18 23:09:50,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342370d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:09:50, skipping insertion in model container [2019-12-18 23:09:50,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:09:49" (2/3) ... [2019-12-18 23:09:50,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342370d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:09:50, skipping insertion in model container [2019-12-18 23:09:50,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:09:50" (3/3) ... [2019-12-18 23:09:50,033 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.oepc.i [2019-12-18 23:09:50,044 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:09:50,044 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:09:50,052 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:09:50,053 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:09:50,080 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,080 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,080 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,081 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,081 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,081 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,082 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,082 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,083 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,083 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,083 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,083 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,084 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,084 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,084 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,085 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,085 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,085 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,089 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,090 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,090 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,090 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,098 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,099 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,100 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,100 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,109 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,109 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,109 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,109 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:09:50,122 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 23:09:50,140 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:09:50,140 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:09:50,141 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:09:50,141 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:09:50,141 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:09:50,141 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:09:50,141 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:09:50,141 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:09:50,153 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-18 23:09:50,156 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-18 23:09:50,203 INFO L126 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-18 23:09:50,207 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:09:50,219 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 23:09:50,221 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-18 23:09:50,238 INFO L126 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-18 23:09:50,238 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:09:50,240 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 23:09:50,241 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 23:09:50,242 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:09:51,622 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-18 23:09:51,694 INFO L206 etLargeBlockEncoding]: Checked pairs total: 425 [2019-12-18 23:09:51,694 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-18 23:09:51,698 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-18 23:09:51,708 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-18 23:09:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-18 23:09:51,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:09:51,718 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:51,719 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:51,719 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:51,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1086085239, now seen corresponding path program 1 times [2019-12-18 23:09:51,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:51,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907725881] [2019-12-18 23:09:51,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:52,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907725881] [2019-12-18 23:09:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:52,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:09:52,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011052626] [2019-12-18 23:09:52,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:52,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:52,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:52,082 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-18 23:09:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:52,149 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-18 23:09:52,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:52,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:09:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:52,163 INFO L225 Difference]: With dead ends: 58 [2019-12-18 23:09:52,164 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 23:09:52,165 INFO L631 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 [2019-12-18 23:09:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 23:09:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 23:09:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 23:09:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-18 23:09:52,203 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-18 23:09:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:52,204 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-18 23:09:52,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-18 23:09:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 23:09:52,205 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:52,205 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:52,205 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash -744608244, now seen corresponding path program 1 times [2019-12-18 23:09:52,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:52,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186100126] [2019-12-18 23:09:52,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:52,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186100126] [2019-12-18 23:09:52,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:52,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:52,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725637005] [2019-12-18 23:09:52,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 23:09:52,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:52,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 23:09:52,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:09:52,339 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-18 23:09:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:52,396 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-18 23:09:52,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:09:52,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-18 23:09:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:52,397 INFO L225 Difference]: With dead ends: 37 [2019-12-18 23:09:52,397 INFO L226 Difference]: Without dead ends: 30 [2019-12-18 23:09:52,398 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-18 23:09:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-18 23:09:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-18 23:09:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 23:09:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-18 23:09:52,404 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-18 23:09:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:52,404 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-18 23:09:52,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 23:09:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-18 23:09:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 23:09:52,405 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:52,405 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:52,405 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1607968112, now seen corresponding path program 1 times [2019-12-18 23:09:52,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:52,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804680479] [2019-12-18 23:09:52,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:52,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804680479] [2019-12-18 23:09:52,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:52,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:52,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718233622] [2019-12-18 23:09:52,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:52,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:52,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:52,473 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 4 states. [2019-12-18 23:09:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:52,492 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2019-12-18 23:09:52,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:52,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 23:09:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:52,494 INFO L225 Difference]: With dead ends: 35 [2019-12-18 23:09:52,495 INFO L226 Difference]: Without dead ends: 31 [2019-12-18 23:09:52,495 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:09:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-18 23:09:52,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-18 23:09:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-18 23:09:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2019-12-18 23:09:52,501 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 10 [2019-12-18 23:09:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:52,502 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2019-12-18 23:09:52,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2019-12-18 23:09:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 23:09:52,503 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:52,504 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:52,504 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:52,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1607961385, now seen corresponding path program 1 times [2019-12-18 23:09:52,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:52,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792880515] [2019-12-18 23:09:52,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:52,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792880515] [2019-12-18 23:09:52,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:52,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 23:09:52,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855095555] [2019-12-18 23:09:52,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 23:09:52,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:52,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 23:09:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-18 23:09:52,631 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2019-12-18 23:09:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:52,718 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-18 23:09:52,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 23:09:52,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 23:09:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:52,719 INFO L225 Difference]: With dead ends: 28 [2019-12-18 23:09:52,719 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 23:09:52,720 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-18 23:09:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 23:09:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 23:09:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 23:09:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 23:09:52,723 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-18 23:09:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:52,724 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 23:09:52,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 23:09:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 23:09:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:09:52,724 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:52,725 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:52,725 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:52,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1627425577, now seen corresponding path program 1 times [2019-12-18 23:09:52,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:52,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478567356] [2019-12-18 23:09:52,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:52,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478567356] [2019-12-18 23:09:52,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:52,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:52,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773686079] [2019-12-18 23:09:52,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:52,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:52,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:52,764 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-18 23:09:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:52,778 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-18 23:09:52,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:52,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 23:09:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:52,779 INFO L225 Difference]: With dead ends: 19 [2019-12-18 23:09:52,779 INFO L226 Difference]: Without dead ends: 14 [2019-12-18 23:09:52,779 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:09:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-18 23:09:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-18 23:09:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-18 23:09:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-18 23:09:52,782 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-18 23:09:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:52,782 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-18 23:09:52,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-18 23:09:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 23:09:52,783 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:09:52,783 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:09:52,783 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:09:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:09:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1633797007, now seen corresponding path program 2 times [2019-12-18 23:09:52,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:09:52,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040141400] [2019-12-18 23:09:52,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:09:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:09:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:09:52,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040141400] [2019-12-18 23:09:52,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:09:52,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:09:52,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017128688] [2019-12-18 23:09:52,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:09:52,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:09:52,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:09:52,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:09:52,824 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-18 23:09:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:09:52,838 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-18 23:09:52,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:09:52,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 23:09:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:09:52,839 INFO L225 Difference]: With dead ends: 13 [2019-12-18 23:09:52,839 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 23:09:52,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:09:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 23:09:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 23:09:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 23:09:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 23:09:52,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 23:09:52,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:09:52,840 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 23:09:52,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:09:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 23:09:52,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 23:09:52,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:09:52 BasicIcfg [2019-12-18 23:09:52,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:09:52,847 INFO L168 Benchmark]: Toolchain (without parser) took 4101.00 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 101.2 MB in the beginning and 129.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,848 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.40 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 100.8 MB in the beginning and 158.3 MB in the end (delta: -57.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.16 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,851 INFO L168 Benchmark]: Boogie Preprocessor took 31.14 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,852 INFO L168 Benchmark]: RCFGBuilder took 448.35 ms. Allocated memory is still 202.9 MB. Free memory was 154.8 MB in the beginning and 134.3 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,853 INFO L168 Benchmark]: TraceAbstraction took 2819.78 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 133.6 MB in the beginning and 129.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:09:52,857 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.40 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 100.8 MB in the beginning and 158.3 MB in the end (delta: -57.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.16 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.14 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 154.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.35 ms. Allocated memory is still 202.9 MB. Free memory was 154.8 MB in the beginning and 134.3 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2819.78 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 133.6 MB in the beginning and 129.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 64 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 425 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 79 SDs, 0 SdLazy, 57 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...