/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:49:21,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:49:21,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:49:21,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:49:21,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:49:21,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:49:21,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:49:21,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:49:21,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:49:21,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:49:21,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:49:21,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:49:21,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:49:21,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:49:21,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:49:21,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:49:21,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:49:21,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:49:21,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:49:21,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:49:21,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:49:21,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:49:21,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:49:21,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:49:21,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:49:21,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:49:21,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:49:21,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:49:21,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:49:21,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:49:21,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:49:21,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:49:21,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:49:21,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:49:21,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:49:21,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:49:21,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:49:21,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:49:21,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:49:21,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:49:21,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:49:21,685 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 23:49:21,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:49:21,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:49:21,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:49:21,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:49:21,713 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:49:21,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:49:21,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:49:21,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:49:21,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:49:21,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:49:21,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:49:21,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:49:21,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:49:21,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:49:21,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:49:21,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:49:21,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:49:21,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:49:21,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:49:21,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:49:21,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:49:21,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:49:21,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:49:21,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:49:21,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:49:21,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:49:21,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:49:21,718 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:49:21,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:49:21,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:49:21,719 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:49:22,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:49:22,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:49:22,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:49:22,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:49:22,203 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:49:22,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-11 23:49:22,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91cb35c8e/190e8fdba4594e0ba46eec37c4d75fd8/FLAGe39c45f1b [2020-09-11 23:49:22,914 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:49:22,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-09-11 23:49:22,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91cb35c8e/190e8fdba4594e0ba46eec37c4d75fd8/FLAGe39c45f1b [2020-09-11 23:49:23,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91cb35c8e/190e8fdba4594e0ba46eec37c4d75fd8 [2020-09-11 23:49:23,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:49:23,201 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:49:23,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:49:23,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:49:23,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:49:23,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:49:23" (1/1) ... [2020-09-11 23:49:23,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f836272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:23, skipping insertion in model container [2020-09-11 23:49:23,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:49:23" (1/1) ... [2020-09-11 23:49:23,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:49:23,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:49:23,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:49:23,854 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:49:23,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:49:24,012 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:49:24,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24 WrapperNode [2020-09-11 23:49:24,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:49:24,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:49:24,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:49:24,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:49:24,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:49:24,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:49:24,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:49:24,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:49:24,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (1/1) ... [2020-09-11 23:49:24,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:49:24,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:49:24,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:49:24,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:49:24,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (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 23:49:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:49:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:49:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:49:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:49:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:49:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:49:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:49:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:49:24,197 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:49:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:49:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:49:24,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:49:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:49:24,200 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 23:49:24,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:49:24,590 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:49:24,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:49:24 BoogieIcfgContainer [2020-09-11 23:49:24,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:49:24,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:49:24,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:49:24,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:49:24,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:49:23" (1/3) ... [2020-09-11 23:49:24,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e913f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:49:24, skipping insertion in model container [2020-09-11 23:49:24,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:49:24" (2/3) ... [2020-09-11 23:49:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e913f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:49:24, skipping insertion in model container [2020-09-11 23:49:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:49:24" (3/3) ... [2020-09-11 23:49:24,606 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-09-11 23:49:24,618 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:49:24,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:49:24,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:49:24,631 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:49:24,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,685 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,690 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,691 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:49:24,716 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:49:24,745 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:49:24,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:49:24,745 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:49:24,745 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:49:24,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:49:24,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:49:24,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:49:24,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:49:24,765 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-11 23:49:24,767 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 23:49:24,818 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 23:49:24,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:49:24,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 23:49:24,827 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 23:49:24,848 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 23:49:24,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:49:24,849 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 23:49:24,851 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-11 23:49:24,853 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:49:26,155 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-09-11 23:49:26,156 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-11 23:49:26,161 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:49:26,188 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-09-11 23:49:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-09-11 23:49:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:49:26,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:26,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:26,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-09-11 23:49:26,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:26,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359444094] [2020-09-11 23:49:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:26,436 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 23:49:26,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359444094] [2020-09-11 23:49:26,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:26,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:49:26,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1782356426] [2020-09-11 23:49:26,440 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:26,444 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:26,462 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:49:26,462 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:26,464 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:26,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 23:49:26,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:26,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 23:49:26,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:49:26,487 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-09-11 23:49:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:26,509 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-09-11 23:49:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 23:49:26,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 23:49:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:26,536 INFO L225 Difference]: With dead ends: 274 [2020-09-11 23:49:26,537 INFO L226 Difference]: Without dead ends: 226 [2020-09-11 23:49:26,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:49:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-11 23:49:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-11 23:49:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-11 23:49:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-09-11 23:49:26,616 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-09-11 23:49:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:26,618 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-09-11 23:49:26,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 23:49:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-09-11 23:49:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:49:26,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:26,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:26,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:49:26,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-09-11 23:49:26,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:26,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720118640] [2020-09-11 23:49:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:26,778 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 23:49:26,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720118640] [2020-09-11 23:49:26,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:26,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:49:26,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1359086063] [2020-09-11 23:49:26,779 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:26,780 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:26,782 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-11 23:49:26,782 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:26,782 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:26,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:49:26,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:26,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:49:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:49:26,785 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-09-11 23:49:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:26,821 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-09-11 23:49:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:49:26,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:49:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:26,825 INFO L225 Difference]: With dead ends: 262 [2020-09-11 23:49:26,825 INFO L226 Difference]: Without dead ends: 214 [2020-09-11 23:49:26,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-11 23:49:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-11 23:49:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-11 23:49:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-09-11 23:49:26,848 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-09-11 23:49:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:26,848 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-09-11 23:49:26,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:49:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-09-11 23:49:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:49:26,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:26,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:26,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:49:26,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:26,851 INFO L82 PathProgramCache]: Analyzing trace with hash 984763373, now seen corresponding path program 1 times [2020-09-11 23:49:26,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:26,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409281771] [2020-09-11 23:49:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:27,006 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 23:49:27,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409281771] [2020-09-11 23:49:27,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:27,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:49:27,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [407908135] [2020-09-11 23:49:27,008 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:27,009 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:27,011 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-09-11 23:49:27,011 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:27,062 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:27,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:49:27,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:27,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:49:27,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:27,063 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand 5 states. [2020-09-11 23:49:27,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:27,126 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-09-11 23:49:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:49:27,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 23:49:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:27,129 INFO L225 Difference]: With dead ends: 232 [2020-09-11 23:49:27,129 INFO L226 Difference]: Without dead ends: 196 [2020-09-11 23:49:27,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:49:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-11 23:49:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-09-11 23:49:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-11 23:49:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-09-11 23:49:27,145 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-09-11 23:49:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:27,145 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-09-11 23:49:27,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:49:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-09-11 23:49:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:49:27,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:27,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:27,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:49:27,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-09-11 23:49:27,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:27,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858936407] [2020-09-11 23:49:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:27,274 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 23:49:27,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858936407] [2020-09-11 23:49:27,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:27,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:49:27,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [789877083] [2020-09-11 23:49:27,275 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:27,276 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:27,278 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-11 23:49:27,279 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:27,327 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:27,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:49:27,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:27,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:49:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:49:27,329 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 6 states. [2020-09-11 23:49:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:27,445 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-09-11 23:49:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 23:49:27,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-09-11 23:49:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:27,447 INFO L225 Difference]: With dead ends: 255 [2020-09-11 23:49:27,447 INFO L226 Difference]: Without dead ends: 150 [2020-09-11 23:49:27,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:49:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-11 23:49:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-11 23:49:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-11 23:49:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-09-11 23:49:27,457 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-09-11 23:49:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:27,460 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-09-11 23:49:27,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:49:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-09-11 23:49:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:49:27,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:27,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:27,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:49:27,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:27,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:27,463 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-09-11 23:49:27,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:27,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482948579] [2020-09-11 23:49:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:27,599 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 23:49:27,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482948579] [2020-09-11 23:49:27,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:27,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:49:27,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2051996573] [2020-09-11 23:49:27,603 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:27,604 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:27,607 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-09-11 23:49:27,609 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:27,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,669 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,718 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,736 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,801 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,823 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,838 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,852 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:27,856 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3259#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:49:27,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:49:27,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:27,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:49:27,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:27,858 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 5 states. [2020-09-11 23:49:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:27,919 INFO L93 Difference]: Finished difference Result 128 states and 285 transitions. [2020-09-11 23:49:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:49:27,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:49:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:27,921 INFO L225 Difference]: With dead ends: 128 [2020-09-11 23:49:27,921 INFO L226 Difference]: Without dead ends: 92 [2020-09-11 23:49:27,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:49:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-11 23:49:27,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-11 23:49:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-11 23:49:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-09-11 23:49:27,926 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2020-09-11 23:49:27,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:27,927 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-09-11 23:49:27,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:49:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-09-11 23:49:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:49:27,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:27,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:27,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:49:27,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-09-11 23:49:27,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:27,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861868863] [2020-09-11 23:49:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:27,987 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 23:49:27,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861868863] [2020-09-11 23:49:27,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:27,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:49:27,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1559824564] [2020-09-11 23:49:27,989 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:27,990 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:27,993 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-09-11 23:49:27,993 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:27,997 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:27,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:49:27,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:27,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:49:27,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:49:27,998 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-09-11 23:49:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:28,021 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-09-11 23:49:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:49:28,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:49:28,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:28,022 INFO L225 Difference]: With dead ends: 120 [2020-09-11 23:49:28,022 INFO L226 Difference]: Without dead ends: 94 [2020-09-11 23:49:28,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 23:49:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-11 23:49:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-11 23:49:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-11 23:49:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-09-11 23:49:28,028 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-09-11 23:49:28,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:28,028 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-09-11 23:49:28,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:49:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-09-11 23:49:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:49:28,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:28,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:28,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:49:28,030 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-09-11 23:49:28,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:28,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242202946] [2020-09-11 23:49:28,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:28,101 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 23:49:28,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242202946] [2020-09-11 23:49:28,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:28,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:49:28,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [674926774] [2020-09-11 23:49:28,103 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:28,104 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:28,110 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 79 transitions. [2020-09-11 23:49:28,111 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:28,268 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:49:28,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:49:28,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:49:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:49:28,270 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-09-11 23:49:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:28,309 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-09-11 23:49:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:49:28,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 23:49:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:28,310 INFO L225 Difference]: With dead ends: 113 [2020-09-11 23:49:28,310 INFO L226 Difference]: Without dead ends: 70 [2020-09-11 23:49:28,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:49:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-11 23:49:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-11 23:49:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-11 23:49:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-09-11 23:49:28,314 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-09-11 23:49:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:28,315 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-09-11 23:49:28,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:49:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-09-11 23:49:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:49:28,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:49:28,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:49:28,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:49:28,316 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:49:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:49:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-09-11 23:49:28,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:49:28,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747057521] [2020-09-11 23:49:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:49:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:49:28,396 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 23:49:28,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747057521] [2020-09-11 23:49:28,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:49:28,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 23:49:28,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1142058602] [2020-09-11 23:49:28,398 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:49:28,400 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:49:28,404 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-09-11 23:49:28,405 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:49:28,416 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:49:28,486 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4148#(not (= 3 ~__unbuffered_cnt~0)), 4149#(not (= ~__unbuffered_cnt~0 2)), 4150#(not (= ~__unbuffered_cnt~0 1)), 4151#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:49:28,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 23:49:28,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:49:28,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 23:49:28,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:49:28,488 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 10 states. [2020-09-11 23:49:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:49:28,525 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-11 23:49:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:49:28,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-11 23:49:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:49:28,526 INFO L225 Difference]: With dead ends: 58 [2020-09-11 23:49:28,526 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:49:28,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:49:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:49:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:49:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:49:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:49:28,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-11 23:49:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:49:28,527 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:49:28,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 23:49:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:49:28,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:49:28,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:49:28,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:49:28 BasicIcfg [2020-09-11 23:49:28,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:49:28,537 INFO L168 Benchmark]: Toolchain (without parser) took 5338.70 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.7 MB in the beginning and 102.2 MB in the end (delta: -457.4 kB). Peak memory consumption was 107.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:28,538 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-11 23:49:28,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.25 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 159.9 MB in the end (delta: -59.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:28,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.97 ms. Allocated memory is still 203.4 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 23:49:28,540 INFO L168 Benchmark]: Boogie Preprocessor took 39.01 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:28,541 INFO L168 Benchmark]: RCFGBuilder took 481.01 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 134.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:28,542 INFO L168 Benchmark]: TraceAbstraction took 3935.88 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 134.5 MB in the beginning and 102.2 MB in the end (delta: 32.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:49:28,546 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 811.25 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 159.9 MB in the end (delta: -59.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.97 ms. Allocated memory is still 203.4 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. * Boogie Preprocessor took 39.01 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 155.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.01 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 134.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3935.88 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 134.5 MB in the beginning and 102.2 MB in the end (delta: 32.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 161 SDtfs, 188 SDslu, 290 SDs, 0 SdLazy, 150 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...