/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:57:32,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:57:32,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:57:32,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:57:32,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:57:32,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:57:32,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:57:32,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:57:32,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:57:32,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:57:32,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:57:32,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:57:32,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:57:32,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:57:32,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:57:32,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:57:32,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:57:32,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:57:32,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:57:32,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:57:32,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:57:32,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:57:32,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:57:32,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:57:32,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:57:32,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:57:32,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:57:32,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:57:32,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:57:32,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:57:32,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:57:32,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:57:32,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:57:32,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:57:32,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:57:32,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:57:32,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:57:32,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:57:32,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:57:32,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:57:32,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:57:32,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:57:32,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:57:32,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:57:32,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:57:32,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:57:32,629 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:57:32,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:57:32,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:57:32,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:57:32,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:57:32,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:57:32,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:57:32,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:57:32,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:57:32,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:57:32,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:57:32,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:57:32,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:57:32,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:57:32,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:57:32,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:57:32,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:57:32,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:57:32,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:57:32,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:57:32,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:57:32,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:57:32,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:57:32,635 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:57:32,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:57:32,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:57:32,636 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:57:33,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:57:33,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:57:33,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:57:33,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:57:33,085 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:57:33,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-09-11 23:57:33,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3db985d1/13a5958278d04d66b13413dfc2372994/FLAGf43e9e86a [2020-09-11 23:57:33,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:57:33,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-09-11 23:57:33,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3db985d1/13a5958278d04d66b13413dfc2372994/FLAGf43e9e86a [2020-09-11 23:57:33,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3db985d1/13a5958278d04d66b13413dfc2372994 [2020-09-11 23:57:33,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:57:34,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:57:34,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:57:34,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:57:34,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:57:34,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:57:33" (1/1) ... [2020-09-11 23:57:34,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c79b83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34, skipping insertion in model container [2020-09-11 23:57:34,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:57:33" (1/1) ... [2020-09-11 23:57:34,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:57:34,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:57:34,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:57:34,675 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:57:34,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:57:34,819 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:57:34,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34 WrapperNode [2020-09-11 23:57:34,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:57:34,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:57:34,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:57:34,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:57:34,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:57:34,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:57:34,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:57:34,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:57:34,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... [2020-09-11 23:57:34,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:57:34,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:57:34,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:57:34,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:57:34,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 23:57:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:57:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:57:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:57:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:57:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:57:35,018 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:57:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:57:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:57:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:57:35,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:57:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:57:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:57:35,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:57:35,024 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:57:35,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:57:35,416 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:57:35,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:57:35 BoogieIcfgContainer [2020-09-11 23:57:35,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:57:35,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:57:35,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:57:35,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:57:35,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:57:33" (1/3) ... [2020-09-11 23:57:35,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524cf3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:57:35, skipping insertion in model container [2020-09-11 23:57:35,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:57:34" (2/3) ... [2020-09-11 23:57:35,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524cf3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:57:35, skipping insertion in model container [2020-09-11 23:57:35,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:57:35" (3/3) ... [2020-09-11 23:57:35,431 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2020-09-11 23:57:35,443 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:57:35,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:57:35,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:57:35,455 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:57:35,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,518 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:57:35,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:57:35,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:57:35,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:57:35,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:57:35,580 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:57:35,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:57:35,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:57:35,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:57:35,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:57:35,610 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:57:35,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:57:35,674 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:57:35,675 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:57:35,680 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:57:35,683 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:57:35,704 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:57:35,704 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:57:35,705 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:57:35,707 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:57:35,708 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:57:37,120 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-11 23:57:37,257 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-11 23:57:37,335 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-11 23:57:37,335 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:57:37,340 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:57:37,367 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:57:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:57:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:57:37,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:37,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:37,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-11 23:57:37,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:37,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679163181] [2020-09-11 23:57:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:37,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679163181] [2020-09-11 23:57:37,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:37,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:57:37,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310183842] [2020-09-11 23:57:37,679 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:37,682 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:37,697 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:57:37,697 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:37,700 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:37,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:57:37,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:37,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:57:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:37,722 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:57:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:37,767 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:57:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:57:37,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:57:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:37,788 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:57:37,788 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:57:37,790 INFO L675 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 [2020-09-11 23:57:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:57:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:57:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:57:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:57:37,866 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:57:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:37,868 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:57:37,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:57:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:57:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:57:37,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:37,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:37,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:57:37,870 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:37,871 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-11 23:57:37,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:37,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7813010] [2020-09-11 23:57:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:37,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7813010] [2020-09-11 23:57:37,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:37,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:57:37,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1454866701] [2020-09-11 23:57:37,947 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:37,948 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:37,952 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-11 23:57:37,952 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:37,996 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:37,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:57:37,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:37,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:57:37,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:37,999 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-11 23:57:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:38,022 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-11 23:57:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:57:38,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 23:57:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:38,026 INFO L225 Difference]: With dead ends: 202 [2020-09-11 23:57:38,026 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 23:57:38,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 23:57:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 23:57:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 23:57:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 23:57:38,047 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-11 23:57:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:38,048 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 23:57:38,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:57:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 23:57:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:57:38,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:38,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:38,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:57:38,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-11 23:57:38,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:38,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12351144] [2020-09-11 23:57:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:38,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12351144] [2020-09-11 23:57:38,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:38,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:57:38,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1142508122] [2020-09-11 23:57:38,156 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:38,157 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:38,161 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-11 23:57:38,161 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:38,232 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:38,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:57:38,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:38,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:57:38,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:38,233 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-11 23:57:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:38,246 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-11 23:57:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:57:38,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 23:57:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:38,248 INFO L225 Difference]: With dead ends: 194 [2020-09-11 23:57:38,248 INFO L226 Difference]: Without dead ends: 194 [2020-09-11 23:57:38,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:57:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-11 23:57:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-11 23:57:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-11 23:57:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-11 23:57:38,267 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-11 23:57:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:38,267 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-11 23:57:38,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:57:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-11 23:57:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:57:38,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:38,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:38,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:57:38,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-11 23:57:38,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:38,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241428824] [2020-09-11 23:57:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:38,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241428824] [2020-09-11 23:57:38,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:38,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:57:38,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2136022963] [2020-09-11 23:57:38,351 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:38,352 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:38,354 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-11 23:57:38,354 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:38,382 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:38,409 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:38,432 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:38,455 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:38,470 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:57:38,475 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:57:38,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:57:38,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:38,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:57:38,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:38,477 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-09-11 23:57:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:38,550 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-09-11 23:57:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:57:38,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-11 23:57:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:38,553 INFO L225 Difference]: With dead ends: 187 [2020-09-11 23:57:38,553 INFO L226 Difference]: Without dead ends: 123 [2020-09-11 23:57:38,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:57:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-11 23:57:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-11 23:57:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-11 23:57:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-11 23:57:38,561 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-09-11 23:57:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:38,561 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-11 23:57:38,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:57:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-11 23:57:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:57:38,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:38,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:38,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:57:38,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-11 23:57:38,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:38,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450195088] [2020-09-11 23:57:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:38,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450195088] [2020-09-11 23:57:38,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:38,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:57:38,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2014841567] [2020-09-11 23:57:38,667 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:38,672 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:38,689 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-11 23:57:38,689 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:38,753 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3040#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:57:38,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:57:38,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:57:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:57:38,754 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 7 states. [2020-09-11 23:57:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:38,818 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-11 23:57:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:57:38,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-11 23:57:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:38,820 INFO L225 Difference]: With dead ends: 118 [2020-09-11 23:57:38,820 INFO L226 Difference]: Without dead ends: 108 [2020-09-11 23:57:38,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:57:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-11 23:57:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-11 23:57:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-11 23:57:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-11 23:57:38,826 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-11 23:57:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:38,826 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-11 23:57:38,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:57:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-11 23:57:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:38,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:38,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:38,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:57:38,829 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:38,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-11 23:57:38,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:38,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694506551] [2020-09-11 23:57:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:38,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694506551] [2020-09-11 23:57:38,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:38,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:57:38,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [54200840] [2020-09-11 23:57:38,896 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:38,898 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:38,904 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-09-11 23:57:38,904 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,093 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:39,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:39,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:39,094 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-11 23:57:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,117 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-11 23:57:39,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:57:39,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,118 INFO L225 Difference]: With dead ends: 133 [2020-09-11 23:57:39,119 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 23:57:39,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 23:57:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 23:57:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 23:57:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-11 23:57:39,123 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-11 23:57:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,123 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-11 23:57:39,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-11 23:57:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:39,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:39,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:39,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:57:39,132 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-11 23:57:39,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:39,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069863643] [2020-09-11 23:57:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:39,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069863643] [2020-09-11 23:57:39,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:57:39,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [683820839] [2020-09-11 23:57:39,254 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,256 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,261 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-09-11 23:57:39,263 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,304 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:39,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:39,305 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-11 23:57:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,330 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-11 23:57:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:57:39,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,332 INFO L225 Difference]: With dead ends: 63 [2020-09-11 23:57:39,332 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 23:57:39,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 23:57:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 23:57:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 23:57:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-11 23:57:39,340 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-11 23:57:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,341 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-11 23:57:39,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-11 23:57:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:39,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:39,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:39,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:57:39,342 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-11 23:57:39,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:39,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419272454] [2020-09-11 23:57:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:39,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419272454] [2020-09-11 23:57:39,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:57:39,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1894782613] [2020-09-11 23:57:39,476 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,478 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,484 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-11 23:57:39,484 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,495 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:39,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:39,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:39,496 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-11 23:57:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,520 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-11 23:57:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:57:39,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,523 INFO L225 Difference]: With dead ends: 56 [2020-09-11 23:57:39,523 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:57:39,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:57:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:57:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:57:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:57:39,525 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:57:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,526 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:57:39,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:57:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:57:39,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:57:39,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:57:39,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:57:39,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:57:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:57:39,533 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-11 23:57:39,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:57:39,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405636645] [2020-09-11 23:57:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:57:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:57:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:57:39,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405636645] [2020-09-11 23:57:39,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:57:39,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:57:39,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1996361128] [2020-09-11 23:57:39,644 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:57:39,646 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:57:39,651 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-11 23:57:39,651 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:57:39,655 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:57:39,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:57:39,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:57:39,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:57:39,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:57:39,657 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:57:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:57:39,671 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-11 23:57:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:57:39,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:57:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:57:39,672 INFO L225 Difference]: With dead ends: 34 [2020-09-11 23:57:39,672 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:57:39,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:57:39,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:57:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:57:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:57:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:57:39,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:57:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:57:39,674 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:57:39,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:57:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:57:39,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:57:39,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:57:39,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:57:39 BasicIcfg [2020-09-11 23:57:39,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:57:39,683 INFO L168 Benchmark]: Toolchain (without parser) took 5684.75 ms. Allocated memory was 139.5 MB in the beginning and 250.1 MB in the end (delta: 110.6 MB). Free memory was 101.7 MB in the beginning and 102.6 MB in the end (delta: -874.3 kB). Peak memory consumption was 109.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,685 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.54 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.9 MB in the beginning and 161.9 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.06 ms. Allocated memory is still 204.5 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,692 INFO L168 Benchmark]: Boogie Preprocessor took 34.15 ms. Allocated memory is still 204.5 MB. Free memory was 159.9 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,693 INFO L168 Benchmark]: RCFGBuilder took 505.36 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 135.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,695 INFO L168 Benchmark]: TraceAbstraction took 4257.18 ms. Allocated memory was 204.5 MB in the beginning and 250.1 MB in the end (delta: 45.6 MB). Free memory was 135.2 MB in the beginning and 102.6 MB in the end (delta: 32.6 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-09-11 23:57:39,707 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.54 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.9 MB in the beginning and 161.9 MB in the end (delta: -61.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.06 ms. Allocated memory is still 204.5 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.15 ms. Allocated memory is still 204.5 MB. Free memory was 159.9 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.36 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 135.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4257.18 ms. Allocated memory was 204.5 MB in the beginning and 250.1 MB in the end (delta: 45.6 MB). Free memory was 135.2 MB in the beginning and 102.6 MB in the end (delta: 32.6 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 186 SDtfs, 122 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 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...