/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/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:54:10,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:54:10,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:54:10,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:54:10,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:54:10,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:54:10,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:54:10,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:54:10,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:54:10,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:54:10,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:54:10,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:54:10,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:54:10,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:54:10,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:54:10,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:54:10,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:54:10,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:54:10,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:54:10,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:54:10,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:54:10,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:54:10,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:54:10,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:54:10,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 22:54:10,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 22:54:10,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 22:54:10,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 22:54:10,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 22:54:10,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 22:54:10,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:54:10,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:54:10,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:54:10,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:54:10,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:54:10,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:54:10,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:54:10,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:54:10,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:54:10,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:54:10,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:54:10,522 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 22:54:10,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:54:10,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:54:10,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:54:10,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:54:10,547 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:54:10,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:54:10,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:54:10,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:54:10,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:54:10,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:54:10,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:54:10,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:54:10,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:54:10,549 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:54:10,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:54:10,550 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:54:10,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:54:10,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:54:10,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:54:10,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:54:10,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:54:10,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:54:10,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:54:10,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:54:10,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:54:10,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:54:10,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:54:10,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:54:10,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:54:10,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:54:10,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:54:10,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:54:10,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:54:10,845 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:54:10,845 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:54:10,846 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2019-12-18 22:54:10,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5be6113/c9aa4ea7537349ff9d61bf11c539aba5/FLAG5e30e2596 [2019-12-18 22:54:11,442 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:54:11,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2019-12-18 22:54:11,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5be6113/c9aa4ea7537349ff9d61bf11c539aba5/FLAG5e30e2596 [2019-12-18 22:54:11,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5be6113/c9aa4ea7537349ff9d61bf11c539aba5 [2019-12-18 22:54:11,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:54:11,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:54:11,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:54:11,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:54:11,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:54:11,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:54:11" (1/1) ... [2019-12-18 22:54:11,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2d3d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:11, skipping insertion in model container [2019-12-18 22:54:11,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:54:11" (1/1) ... [2019-12-18 22:54:11,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:54:11,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:54:12,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:54:12,341 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:54:12,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:54:12,459 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:54:12,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12 WrapperNode [2019-12-18 22:54:12,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:54:12,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:54:12,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:54:12,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:54:12,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:54:12,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:54:12,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:54:12,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:54:12,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (1/1) ... [2019-12-18 22:54:12,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:54:12,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:54:12,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:54:12,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:54:12,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (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 22:54:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:54:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:54:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:54:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:54:12,614 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:54:12,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:54:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:54:12,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:54:12,615 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:54:12,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:54:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:54:12,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:54:12,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:54:12,617 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 22:54:12,998 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:54:12,998 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:54:13,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:54:12 BoogieIcfgContainer [2019-12-18 22:54:13,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:54:13,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:54:13,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:54:13,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:54:13,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:54:11" (1/3) ... [2019-12-18 22:54:13,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3427da60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:54:13, skipping insertion in model container [2019-12-18 22:54:13,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:54:12" (2/3) ... [2019-12-18 22:54:13,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3427da60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:54:13, skipping insertion in model container [2019-12-18 22:54:13,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:54:12" (3/3) ... [2019-12-18 22:54:13,008 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2019-12-18 22:54:13,018 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:54:13,018 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:54:13,026 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:54:13,027 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:54:13,052 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,052 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,052 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,054 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,054 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,054 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,055 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,055 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,055 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,055 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,056 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,056 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,056 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,057 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,057 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,057 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,057 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,058 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,061 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,062 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,062 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,062 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,065 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,066 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,066 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,066 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,069 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,069 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,069 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,069 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:54:13,084 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:54:13,100 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:54:13,100 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:54:13,100 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:54:13,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:54:13,101 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:54:13,101 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:54:13,101 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:54:13,101 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:54:13,113 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 22:54:13,115 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:54:13,156 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:54:13,156 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:54:13,163 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:54:13,168 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 22:54:13,190 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 22:54:13,190 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:54:13,192 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:54:13,195 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:54:13,200 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:54:14,446 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 22:54:14,638 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-12-18 22:54:14,694 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-18 22:54:14,694 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 22:54:14,697 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 22:54:14,705 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 22:54:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 22:54:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:54:14,714 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:14,715 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:14,716 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-18 22:54:14,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:14,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47455407] [2019-12-18 22:54:14,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:14,951 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 22:54:14,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47455407] [2019-12-18 22:54:14,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:14,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:54:14,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005998394] [2019-12-18 22:54:14,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:54:14,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:54:14,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:14,974 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 22:54:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:15,012 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-18 22:54:15,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:54:15,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:54:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:15,027 INFO L225 Difference]: With dead ends: 42 [2019-12-18 22:54:15,028 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 22:54:15,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 22:54:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 22:54:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:54:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 22:54:15,067 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 22:54:15,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:15,068 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 22:54:15,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:54:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 22:54:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:54:15,069 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:15,069 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:15,070 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:15,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1649012318, now seen corresponding path program 1 times [2019-12-18 22:54:15,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:15,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978288597] [2019-12-18 22:54:15,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:15,149 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 22:54:15,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978288597] [2019-12-18 22:54:15,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:15,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:54:15,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693878862] [2019-12-18 22:54:15,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:54:15,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:15,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:54:15,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:15,154 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-18 22:54:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:15,161 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-18 22:54:15,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:54:15,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 22:54:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:15,163 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:54:15,163 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 22:54:15,164 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:54:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 22:54:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 22:54:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 22:54:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-18 22:54:15,175 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 9 [2019-12-18 22:54:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:15,175 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-18 22:54:15,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:54:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-18 22:54:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:54:15,178 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:15,178 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:15,178 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-18 22:54:15,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:15,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955315469] [2019-12-18 22:54:15,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:15,391 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 22:54:15,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955315469] [2019-12-18 22:54:15,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:15,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 22:54:15,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114402248] [2019-12-18 22:54:15,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 22:54:15,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:15,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 22:54:15,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-18 22:54:15,396 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 6 states. [2019-12-18 22:54:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:15,476 INFO L93 Difference]: Finished difference Result 32 states and 57 transitions. [2019-12-18 22:54:15,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 22:54:15,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 22:54:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:15,478 INFO L225 Difference]: With dead ends: 32 [2019-12-18 22:54:15,478 INFO L226 Difference]: Without dead ends: 24 [2019-12-18 22:54:15,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-18 22:54:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-18 22:54:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-18 22:54:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-18 22:54:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-18 22:54:15,486 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-18 22:54:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:15,487 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-18 22:54:15,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 22:54:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-18 22:54:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:54:15,488 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:15,489 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:15,489 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:15,489 INFO L82 PathProgramCache]: Analyzing trace with hash 868107411, now seen corresponding path program 1 times [2019-12-18 22:54:15,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:15,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948222843] [2019-12-18 22:54:15,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:15,561 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 22:54:15,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948222843] [2019-12-18 22:54:15,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:15,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:54:15,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907069538] [2019-12-18 22:54:15,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:54:15,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:54:15,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:54:15,564 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 4 states. [2019-12-18 22:54:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:15,583 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-18 22:54:15,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:54:15,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:54:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:15,584 INFO L225 Difference]: With dead ends: 27 [2019-12-18 22:54:15,584 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 22:54:15,585 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 22:54:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 22:54:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 22:54:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 22:54:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 22:54:15,588 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-18 22:54:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:15,588 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 22:54:15,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:54:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 22:54:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:54:15,591 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:15,591 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:15,591 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash 144947967, now seen corresponding path program 2 times [2019-12-18 22:54:15,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:15,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732114463] [2019-12-18 22:54:15,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:15,652 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 22:54:15,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732114463] [2019-12-18 22:54:15,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:15,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:54:15,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98780208] [2019-12-18 22:54:15,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:54:15,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:54:15,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:54:15,657 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-18 22:54:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:15,684 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-18 22:54:15,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:54:15,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:54:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:15,688 INFO L225 Difference]: With dead ends: 18 [2019-12-18 22:54:15,688 INFO L226 Difference]: Without dead ends: 12 [2019-12-18 22:54:15,688 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 22:54:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-18 22:54:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-18 22:54:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-18 22:54:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-18 22:54:15,690 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-18 22:54:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:15,691 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-18 22:54:15,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:54:15,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-18 22:54:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:54:15,692 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:54:15,692 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:54:15,692 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:54:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:54:15,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1810889517, now seen corresponding path program 3 times [2019-12-18 22:54:15,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:54:15,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496421847] [2019-12-18 22:54:15,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:54:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:54:15,748 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 22:54:15,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496421847] [2019-12-18 22:54:15,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:54:15,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:54:15,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059359740] [2019-12-18 22:54:15,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:54:15,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:54:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:54:15,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:54:15,751 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-12-18 22:54:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:54:15,764 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-18 22:54:15,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:54:15,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:54:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:54:15,765 INFO L225 Difference]: With dead ends: 11 [2019-12-18 22:54:15,765 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:54:15,765 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 22:54:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:54:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:54:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:54:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:54:15,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:54:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:54:15,766 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:54:15,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:54:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:54:15,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:54:15,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:54:15 BasicIcfg [2019-12-18 22:54:15,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:54:15,771 INFO L168 Benchmark]: Toolchain (without parser) took 4024.47 ms. Allocated memory was 137.4 MB in the beginning and 250.6 MB in the end (delta: 113.2 MB). Free memory was 100.8 MB in the beginning and 142.3 MB in the end (delta: -41.5 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,772 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.67 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 159.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.68 ms. Allocated memory is still 201.3 MB. Free memory was 159.4 MB in the beginning and 156.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,775 INFO L168 Benchmark]: Boogie Preprocessor took 32.65 ms. Allocated memory is still 201.3 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,776 INFO L168 Benchmark]: RCFGBuilder took 453.74 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 134.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,777 INFO L168 Benchmark]: TraceAbstraction took 2768.62 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 134.7 MB in the beginning and 142.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:54:15,783 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.67 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 159.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.68 ms. Allocated memory is still 201.3 MB. Free memory was 159.4 MB in the beginning and 156.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.65 ms. Allocated memory is still 201.3 MB. Free memory was 156.7 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.74 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 134.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2768.62 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 134.7 MB in the beginning and 142.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 38 SDslu, 49 SDs, 0 SdLazy, 48 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459 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...