/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:50:24,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:50:24,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:50:24,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:50:24,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:50:24,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:50:24,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:50:24,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:50:24,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:50:24,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:50:24,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:50:24,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:50:24,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:50:24,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:50:24,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:50:24,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:50:24,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:50:24,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:50:24,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:50:24,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:50:24,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:50:24,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:50:24,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:50:24,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:50:24,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:50:24,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:50:24,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:50:24,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:50:24,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:50:24,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:50:24,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:50:24,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:50:24,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:50:24,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:50:24,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:50:24,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:50:24,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:50:24,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:50:24,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:50:24,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:50:24,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:50:24,547 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-SemanticLbe.epf [2020-04-17 21:50:24,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:50:24,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:50:24,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:50:24,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:50:24,564 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:50:24,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:50:24,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:50:24,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:50:24,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:50:24,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:50:24,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:50:24,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:50:24,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:50:24,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:50:24,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:50:24,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:50:24,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:50:24,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:50:24,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:50:24,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:50:24,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:50:24,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:50:24,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:50:24,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:50:24,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:50:24,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:50:24,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:50:24,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:50:24,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:50:24,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:50:24,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:50:24,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:50:24,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:50:24,898 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:50:24,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-04-17 21:50:24,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbb7ecd6/65b19ceb9f624c789df8c7d2e5d89443/FLAGa4c1aeb20 [2020-04-17 21:50:25,507 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:50:25,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-04-17 21:50:25,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbb7ecd6/65b19ceb9f624c789df8c7d2e5d89443/FLAGa4c1aeb20 [2020-04-17 21:50:25,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbb7ecd6/65b19ceb9f624c789df8c7d2e5d89443 [2020-04-17 21:50:25,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:50:25,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:50:25,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:50:25,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:50:25,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:50:25,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:50:25" (1/1) ... [2020-04-17 21:50:25,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748702d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:25, skipping insertion in model container [2020-04-17 21:50:25,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:50:25" (1/1) ... [2020-04-17 21:50:25,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:50:25,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:50:26,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:50:26,443 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:50:26,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:50:26,602 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:50:26,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26 WrapperNode [2020-04-17 21:50:26,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:50:26,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:50:26,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:50:26,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:50:26,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:50:26,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:50:26,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:50:26,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:50:26,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... [2020-04-17 21:50:26,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:50:26,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:50:26,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:50:26,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:50:26,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:50:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:50:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:50:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:50:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:50:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:50:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:50:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:50:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:50:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:50:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:50:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:50:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:50:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:50:26,753 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:50:27,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:50:27,161 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:50:27,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:50:27 BoogieIcfgContainer [2020-04-17 21:50:27,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:50:27,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:50:27,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:50:27,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:50:27,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:50:25" (1/3) ... [2020-04-17 21:50:27,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572a681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:50:27, skipping insertion in model container [2020-04-17 21:50:27,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:50:26" (2/3) ... [2020-04-17 21:50:27,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572a681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:50:27, skipping insertion in model container [2020-04-17 21:50:27,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:50:27" (3/3) ... [2020-04-17 21:50:27,174 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-04-17 21:50:27,185 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:50:27,185 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:50:27,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:50:27,195 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:50:27,221 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,221 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,222 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,222 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,223 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,223 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,224 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,224 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,225 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,225 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,226 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,226 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,228 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,228 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,228 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,229 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,230 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,234 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,235 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,235 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,235 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,254 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,255 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,256 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,256 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,259 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,259 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,261 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,261 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:50:27,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:50:27,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:50:27,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:50:27,308 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:50:27,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:50:27,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:50:27,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:50:27,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:50:27,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:50:27,326 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 21:50:27,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:50:27,386 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:50:27,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:50:27,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:50:27,401 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 21:50:27,422 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 21:50:27,423 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:50:27,423 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:50:27,426 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:50:27,429 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:50:29,367 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-17 21:50:29,367 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:50:29,375 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:50:29,418 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:50:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:50:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:50:29,432 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:29,433 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:29,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:29,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-17 21:50:29,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:29,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131978428] [2020-04-17 21:50:29,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:29,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131978428] [2020-04-17 21:50:29,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:29,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:50:29,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141523751] [2020-04-17 21:50:29,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:29,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:29,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:29,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:29,814 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:50:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:29,869 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-17 21:50:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:29,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:50:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:29,889 INFO L225 Difference]: With dead ends: 290 [2020-04-17 21:50:29,889 INFO L226 Difference]: Without dead ends: 226 [2020-04-17 21:50:29,890 INFO L678 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 [2020-04-17 21:50:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-17 21:50:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-17 21:50:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-17 21:50:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-17 21:50:29,972 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-17 21:50:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:29,973 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-17 21:50:29,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-17 21:50:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:50:29,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:29,975 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:29,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:29,976 INFO L82 PathProgramCache]: Analyzing trace with hash -838449604, now seen corresponding path program 1 times [2020-04-17 21:50:29,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:29,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512126204] [2020-04-17 21:50:29,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512126204] [2020-04-17 21:50:30,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:50:30,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123949694] [2020-04-17 21:50:30,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:30,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:30,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:30,053 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-17 21:50:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,070 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-04-17 21:50:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:30,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 21:50:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,073 INFO L225 Difference]: With dead ends: 198 [2020-04-17 21:50:30,074 INFO L226 Difference]: Without dead ends: 198 [2020-04-17 21:50:30,075 INFO L678 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 [2020-04-17 21:50:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-04-17 21:50:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-04-17 21:50:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-17 21:50:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-04-17 21:50:30,093 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 9 [2020-04-17 21:50:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,093 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-04-17 21:50:30,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-04-17 21:50:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:50:30,095 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,095 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,096 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-17 21:50:30,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465000260] [2020-04-17 21:50:30,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465000260] [2020-04-17 21:50:30,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:50:30,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144684965] [2020-04-17 21:50:30,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:50:30,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:50:30,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:50:30,188 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 4 states. [2020-04-17 21:50:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,231 INFO L93 Difference]: Finished difference Result 342 states and 872 transitions. [2020-04-17 21:50:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:50:30,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:50:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,235 INFO L225 Difference]: With dead ends: 342 [2020-04-17 21:50:30,235 INFO L226 Difference]: Without dead ends: 234 [2020-04-17 21:50:30,236 INFO L678 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 [2020-04-17 21:50:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-04-17 21:50:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 198. [2020-04-17 21:50:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-04-17 21:50:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 506 transitions. [2020-04-17 21:50:30,254 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 506 transitions. Word has length 11 [2020-04-17 21:50:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,255 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 506 transitions. [2020-04-17 21:50:30,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:50:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 506 transitions. [2020-04-17 21:50:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:50:30,257 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,257 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,257 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 2 times [2020-04-17 21:50:30,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468072883] [2020-04-17 21:50:30,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468072883] [2020-04-17 21:50:30,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:30,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270297414] [2020-04-17 21:50:30,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:50:30,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:50:30,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:50:30,325 INFO L87 Difference]: Start difference. First operand 198 states and 506 transitions. Second operand 4 states. [2020-04-17 21:50:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,352 INFO L93 Difference]: Finished difference Result 218 states and 540 transitions. [2020-04-17 21:50:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:50:30,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:50:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,357 INFO L225 Difference]: With dead ends: 218 [2020-04-17 21:50:30,357 INFO L226 Difference]: Without dead ends: 154 [2020-04-17 21:50:30,358 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:50:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-17 21:50:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-17 21:50:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-17 21:50:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-04-17 21:50:30,378 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-04-17 21:50:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,378 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-04-17 21:50:30,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:50:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-17 21:50:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:50:30,383 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,383 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-17 21:50:30,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116711047] [2020-04-17 21:50:30,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116711047] [2020-04-17 21:50:30,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:30,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961219470] [2020-04-17 21:50:30,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:30,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:30,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:30,470 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-04-17 21:50:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,487 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-04-17 21:50:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:30,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 21:50:30,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,489 INFO L225 Difference]: With dead ends: 174 [2020-04-17 21:50:30,489 INFO L226 Difference]: Without dead ends: 72 [2020-04-17 21:50:30,489 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-17 21:50:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-17 21:50:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-17 21:50:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-17 21:50:30,497 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-17 21:50:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,498 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-17 21:50:30,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-17 21:50:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:50:30,504 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,504 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-04-17 21:50:30,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258389207] [2020-04-17 21:50:30,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258389207] [2020-04-17 21:50:30,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:30,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446684342] [2020-04-17 21:50:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:50:30,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:50:30,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:50:30,605 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-17 21:50:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,646 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-17 21:50:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:50:30,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:50:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,647 INFO L225 Difference]: With dead ends: 85 [2020-04-17 21:50:30,647 INFO L226 Difference]: Without dead ends: 61 [2020-04-17 21:50:30,648 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:50:30,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-17 21:50:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-17 21:50:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-17 21:50:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-17 21:50:30,651 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-17 21:50:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,652 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-17 21:50:30,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:50:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-17 21:50:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:50:30,653 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,653 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,653 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-17 21:50:30,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004936233] [2020-04-17 21:50:30,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004936233] [2020-04-17 21:50:30,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:50:30,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938015341] [2020-04-17 21:50:30,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:50:30,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:50:30,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:50:30,706 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-17 21:50:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,761 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-17 21:50:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:50:30,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:50:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,764 INFO L225 Difference]: With dead ends: 62 [2020-04-17 21:50:30,764 INFO L226 Difference]: Without dead ends: 47 [2020-04-17 21:50:30,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:50:30,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-17 21:50:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-17 21:50:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-17 21:50:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-17 21:50:30,767 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-17 21:50:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,767 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-17 21:50:30,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:50:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-17 21:50:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:50:30,768 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,768 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-17 21:50:30,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324580840] [2020-04-17 21:50:30,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324580840] [2020-04-17 21:50:30,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:50:30,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984953295] [2020-04-17 21:50:30,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:50:30,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:50:30,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:50:30,847 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-17 21:50:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,912 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-17 21:50:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:50:30,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:50:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,913 INFO L225 Difference]: With dead ends: 44 [2020-04-17 21:50:30,913 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 21:50:30,913 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:50:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 21:50:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 21:50:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 21:50:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-17 21:50:30,915 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-17 21:50:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,916 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-17 21:50:30,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:50:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-17 21:50:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:50:30,916 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:50:30,916 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:50:30,917 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:50:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:50:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-17 21:50:30,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:50:30,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866922224] [2020-04-17 21:50:30,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:50:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:50:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:50:30,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866922224] [2020-04-17 21:50:30,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:50:30,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:50:30,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199496622] [2020-04-17 21:50:30,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:50:30,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:50:30,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:50:30,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:30,973 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 3 states. [2020-04-17 21:50:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:50:30,979 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-17 21:50:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:50:30,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-04-17 21:50:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:50:30,980 INFO L225 Difference]: With dead ends: 37 [2020-04-17 21:50:30,980 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:50:30,980 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:50:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:50:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:50:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:50:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:50:30,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:50:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:50:30,982 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:50:30,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:50:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:50:30,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:50:30,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:50:30 BasicIcfg [2020-04-17 21:50:30,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:50:30,990 INFO L168 Benchmark]: Toolchain (without parser) took 5170.72 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 101.1 MB in the beginning and 156.2 MB in the end (delta: -55.1 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:30,992 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 145.8 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. [2020-04-17 21:50:30,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.64 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 99.2 MB in the beginning and 158.1 MB in the end (delta: -59.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:30,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.53 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 155.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:30,998 INFO L168 Benchmark]: Boogie Preprocessor took 25.99 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:30,999 INFO L168 Benchmark]: RCFGBuilder took 484.28 ms. Allocated memory is still 202.4 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:31,001 INFO L168 Benchmark]: TraceAbstraction took 3819.90 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 131.7 MB in the beginning and 156.2 MB in the end (delta: -24.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:50:31,013 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 145.8 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 769.64 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 99.2 MB in the beginning and 158.1 MB in the end (delta: -59.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.53 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 155.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.99 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 154.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.28 ms. Allocated memory is still 202.4 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3819.90 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 131.7 MB in the beginning and 156.2 MB in the end (delta: -24.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 171 SDtfs, 114 SDslu, 174 SDs, 0 SdLazy, 120 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 3519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...