/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:11:08,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:11:08,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:11:08,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:11:08,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:11:08,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:11:08,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:11:08,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:11:08,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:11:08,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:11:08,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:11:08,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:11:08,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:11:08,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:11:08,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:11:08,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:11:08,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:11:08,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:11:08,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:11:08,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:11:08,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:11:08,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:11:08,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:11:08,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:11:08,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:11:08,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:11:08,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:11:08,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:11:08,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:11:08,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:11:08,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:11:08,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:11:08,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:11:08,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:11:08,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:11:08,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:11:08,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:11:08,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:11:08,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:11:08,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:11:08,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:11:08,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:11:08,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:11:08,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:11:08,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:11:08,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:11:08,660 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:11:08,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:11:08,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:11:08,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:11:08,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:11:08,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:11:08,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:11:08,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:11:08,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:11:08,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:11:08,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:11:08,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:11:08,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:11:08,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:11:08,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:11:08,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:11:08,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:11:08,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:11:08,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:11:08,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:11:08,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:11:08,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:11:08,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:11:08,664 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:11:08,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:11:08,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:11:08,665 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:11:08,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:11:08,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:11:08,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:11:08,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:11:08,968 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:11:08,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-22 02:11:09,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2923e6e21/9365bb212126455987ce56a206af9f11/FLAG8e178ac66 [2020-10-22 02:11:09,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:11:09,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-22 02:11:09,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2923e6e21/9365bb212126455987ce56a206af9f11/FLAG8e178ac66 [2020-10-22 02:11:09,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2923e6e21/9365bb212126455987ce56a206af9f11 [2020-10-22 02:11:09,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:11:09,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:11:09,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:11:09,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:11:09,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:11:09,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:11:09" (1/1) ... [2020-10-22 02:11:09,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2f7a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:09, skipping insertion in model container [2020-10-22 02:11:09,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:11:09" (1/1) ... [2020-10-22 02:11:09,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:11:09,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:11:10,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:11:10,413 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:11:10,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:11:10,542 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:11:10,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10 WrapperNode [2020-10-22 02:11:10,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:11:10,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:11:10,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:11:10,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:11:10,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:11:10,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:11:10,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:11:10,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:11:10,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... [2020-10-22 02:11:10,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:11:10,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:11:10,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:11:10,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:11:10,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:11:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:11:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:11:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:11:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:11:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:11:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:11:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:11:10,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:11:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:11:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:11:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:11:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:11:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:11:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:11:10,701 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:11:11,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:11:11,095 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:11:11,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:11:11 BoogieIcfgContainer [2020-10-22 02:11:11,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:11:11,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:11:11,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:11:11,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:11:11,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:11:09" (1/3) ... [2020-10-22 02:11:11,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5197bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:11:11, skipping insertion in model container [2020-10-22 02:11:11,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:11:10" (2/3) ... [2020-10-22 02:11:11,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5197bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:11:11, skipping insertion in model container [2020-10-22 02:11:11,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:11:11" (3/3) ... [2020-10-22 02:11:11,106 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-10-22 02:11:11,117 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:11:11,117 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:11:11,125 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:11:11,126 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:11:11,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,154 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,155 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,155 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,157 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,157 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,158 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,159 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,159 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,159 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,165 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,165 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,171 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,172 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,172 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:11,179 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:11:11,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:11:11,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:11:11,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:11:11,211 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:11:11,211 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:11:11,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:11:11,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:11:11,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:11:11,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:11:11,225 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:11:11,226 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 02:11:11,229 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 02:11:11,231 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-22 02:11:11,282 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-22 02:11:11,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:11:11,290 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:11:11,293 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:11:12,910 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-22 02:11:13,021 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-10-22 02:11:13,021 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-10-22 02:11:13,028 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-22 02:11:13,056 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-22 02:11:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-22 02:11:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:11:13,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:13,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:13,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-22 02:11:13,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:13,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934784670] [2020-10-22 02:11:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:13,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934784670] [2020-10-22 02:11:13,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:13,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:11:13,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1502055846] [2020-10-22 02:11:13,278 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:13,280 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:13,294 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:11:13,294 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:13,298 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:13,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:11:13,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:11:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:11:13,313 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-22 02:11:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:13,339 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-22 02:11:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:11:13,341 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 02:11:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:13,357 INFO L225 Difference]: With dead ends: 362 [2020-10-22 02:11:13,357 INFO L226 Difference]: Without dead ends: 298 [2020-10-22 02:11:13,359 INFO L677 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 [2020-10-22 02:11:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-22 02:11:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-22 02:11:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-22 02:11:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-22 02:11:13,447 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-22 02:11:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:13,449 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-22 02:11:13,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:11:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-22 02:11:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:11:13,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:13,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:13,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:11:13,451 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:13,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-22 02:11:13,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:13,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037083022] [2020-10-22 02:11:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:13,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037083022] [2020-10-22 02:11:13,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:13,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:11:13,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584519053] [2020-10-22 02:11:13,597 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:13,599 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:13,602 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:11:13,602 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:13,606 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:13,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:11:13,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:11:13,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:11:13,609 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-22 02:11:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:13,686 INFO L93 Difference]: Finished difference Result 330 states and 904 transitions. [2020-10-22 02:11:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:13,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:11:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:13,691 INFO L225 Difference]: With dead ends: 330 [2020-10-22 02:11:13,691 INFO L226 Difference]: Without dead ends: 266 [2020-10-22 02:11:13,694 INFO L677 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 [2020-10-22 02:11:13,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-22 02:11:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-22 02:11:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-22 02:11:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 744 transitions. [2020-10-22 02:11:13,741 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 744 transitions. Word has length 9 [2020-10-22 02:11:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:13,741 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 744 transitions. [2020-10-22 02:11:13,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:11:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 744 transitions. [2020-10-22 02:11:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:11:13,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:13,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:13,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:11:13,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:13,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1113237188, now seen corresponding path program 1 times [2020-10-22 02:11:13,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:13,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031103390] [2020-10-22 02:11:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:13,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031103390] [2020-10-22 02:11:13,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:13,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:13,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [12721111] [2020-10-22 02:11:13,856 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:13,857 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:13,860 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-10-22 02:11:13,860 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:13,947 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:13,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:13,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:13,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:13,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:13,949 INFO L87 Difference]: Start difference. First operand 266 states and 744 transitions. Second operand 5 states. [2020-10-22 02:11:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:14,021 INFO L93 Difference]: Finished difference Result 282 states and 764 transitions. [2020-10-22 02:11:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:11:14,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-22 02:11:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:14,024 INFO L225 Difference]: With dead ends: 282 [2020-10-22 02:11:14,024 INFO L226 Difference]: Without dead ends: 250 [2020-10-22 02:11:14,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-22 02:11:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-10-22 02:11:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-22 02:11:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 692 transitions. [2020-10-22 02:11:14,060 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 692 transitions. Word has length 11 [2020-10-22 02:11:14,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:14,061 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 692 transitions. [2020-10-22 02:11:14,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:14,063 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 692 transitions. [2020-10-22 02:11:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:11:14,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:14,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:14,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:11:14,066 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:14,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:14,068 INFO L82 PathProgramCache]: Analyzing trace with hash 284483281, now seen corresponding path program 1 times [2020-10-22 02:11:14,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:14,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017231123] [2020-10-22 02:11:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:14,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017231123] [2020-10-22 02:11:14,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:14,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:14,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [174031682] [2020-10-22 02:11:14,172 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:14,173 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:14,174 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-10-22 02:11:14,174 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:14,189 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:14,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:14,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:14,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:14,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:14,190 INFO L87 Difference]: Start difference. First operand 250 states and 692 transitions. Second operand 5 states. [2020-10-22 02:11:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:14,228 INFO L93 Difference]: Finished difference Result 306 states and 826 transitions. [2020-10-22 02:11:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:14,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-22 02:11:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:14,230 INFO L225 Difference]: With dead ends: 306 [2020-10-22 02:11:14,231 INFO L226 Difference]: Without dead ends: 170 [2020-10-22 02:11:14,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-22 02:11:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-22 02:11:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-22 02:11:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-10-22 02:11:14,238 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-10-22 02:11:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:14,239 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-10-22 02:11:14,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-10-22 02:11:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:11:14,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:14,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:14,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:11:14,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:14,241 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-10-22 02:11:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:14,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8023683] [2020-10-22 02:11:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:14,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8023683] [2020-10-22 02:11:14,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:14,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:14,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1571036943] [2020-10-22 02:11:14,294 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:14,295 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:14,297 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-22 02:11:14,298 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:14,322 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:14,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:11:14,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:14,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:11:14,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:11:14,324 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-10-22 02:11:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:14,360 INFO L93 Difference]: Finished difference Result 178 states and 434 transitions. [2020-10-22 02:11:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:14,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 02:11:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:14,362 INFO L225 Difference]: With dead ends: 178 [2020-10-22 02:11:14,362 INFO L226 Difference]: Without dead ends: 154 [2020-10-22 02:11:14,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:14,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-22 02:11:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-22 02:11:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-22 02:11:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 380 transitions. [2020-10-22 02:11:14,368 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 380 transitions. Word has length 12 [2020-10-22 02:11:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:14,368 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 380 transitions. [2020-10-22 02:11:14,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:11:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 380 transitions. [2020-10-22 02:11:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:11:14,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:14,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:14,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:11:14,370 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:14,371 INFO L82 PathProgramCache]: Analyzing trace with hash 370300484, now seen corresponding path program 1 times [2020-10-22 02:11:14,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:14,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775155826] [2020-10-22 02:11:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:14,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775155826] [2020-10-22 02:11:14,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:14,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:11:14,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [738984104] [2020-10-22 02:11:14,426 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:14,427 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:14,430 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-22 02:11:14,430 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:14,509 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:14,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:11:14,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:14,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:11:14,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:11:14,510 INFO L87 Difference]: Start difference. First operand 154 states and 380 transitions. Second operand 4 states. [2020-10-22 02:11:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:14,526 INFO L93 Difference]: Finished difference Result 162 states and 388 transitions. [2020-10-22 02:11:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:14,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 02:11:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:14,529 INFO L225 Difference]: With dead ends: 162 [2020-10-22 02:11:14,529 INFO L226 Difference]: Without dead ends: 146 [2020-10-22 02:11:14,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-22 02:11:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-22 02:11:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-22 02:11:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 356 transitions. [2020-10-22 02:11:14,534 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 356 transitions. Word has length 13 [2020-10-22 02:11:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:14,535 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 356 transitions. [2020-10-22 02:11:14,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:11:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 356 transitions. [2020-10-22 02:11:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:11:14,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:14,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:14,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:11:14,536 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1988159974, now seen corresponding path program 1 times [2020-10-22 02:11:14,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:14,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280476954] [2020-10-22 02:11:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:14,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280476954] [2020-10-22 02:11:14,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:14,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:14,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990239186] [2020-10-22 02:11:14,596 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:14,597 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:14,601 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-10-22 02:11:14,601 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:14,771 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:14,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:14,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:14,773 INFO L87 Difference]: Start difference. First operand 146 states and 356 transitions. Second operand 5 states. [2020-10-22 02:11:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:14,803 INFO L93 Difference]: Finished difference Result 218 states and 530 transitions. [2020-10-22 02:11:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:14,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 02:11:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:14,804 INFO L225 Difference]: With dead ends: 218 [2020-10-22 02:11:14,805 INFO L226 Difference]: Without dead ends: 116 [2020-10-22 02:11:14,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-22 02:11:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-22 02:11:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-22 02:11:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-10-22 02:11:14,823 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 14 [2020-10-22 02:11:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:14,823 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-10-22 02:11:14,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-10-22 02:11:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:11:14,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:14,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:14,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:11:14,824 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1926444660, now seen corresponding path program 2 times [2020-10-22 02:11:14,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:14,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382282016] [2020-10-22 02:11:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:14,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382282016] [2020-10-22 02:11:14,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:14,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:11:14,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1946082271] [2020-10-22 02:11:14,923 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:14,925 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:14,928 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 41 transitions. [2020-10-22 02:11:14,928 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:15,019 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:15,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:15,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:15,020 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 5 states. [2020-10-22 02:11:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:15,052 INFO L93 Difference]: Finished difference Result 152 states and 362 transitions. [2020-10-22 02:11:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:11:15,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 02:11:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:15,053 INFO L225 Difference]: With dead ends: 152 [2020-10-22 02:11:15,053 INFO L226 Difference]: Without dead ends: 80 [2020-10-22 02:11:15,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-22 02:11:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-22 02:11:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-22 02:11:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-22 02:11:15,057 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 14 [2020-10-22 02:11:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:15,057 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-22 02:11:15,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:15,058 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-22 02:11:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:11:15,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:15,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:15,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:11:15,059 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:15,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 3 times [2020-10-22 02:11:15,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:15,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498568846] [2020-10-22 02:11:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:15,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498568846] [2020-10-22 02:11:15,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:15,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:15,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2119047689] [2020-10-22 02:11:15,110 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:15,111 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:15,115 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-10-22 02:11:15,116 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:15,153 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 02:11:15,154 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 02:11:15,168 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 02:11:15,168 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 02:11:15,187 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5824#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 02:11:15,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:15,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:15,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:15,188 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 5 states. [2020-10-22 02:11:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:15,227 INFO L93 Difference]: Finished difference Result 72 states and 135 transitions. [2020-10-22 02:11:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:15,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 02:11:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:15,228 INFO L225 Difference]: With dead ends: 72 [2020-10-22 02:11:15,228 INFO L226 Difference]: Without dead ends: 50 [2020-10-22 02:11:15,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-22 02:11:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-22 02:11:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-22 02:11:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-22 02:11:15,231 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 14 [2020-10-22 02:11:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:15,231 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-22 02:11:15,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-22 02:11:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 02:11:15,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:15,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:15,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:11:15,233 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-10-22 02:11:15,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:15,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732786912] [2020-10-22 02:11:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:15,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732786912] [2020-10-22 02:11:15,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:15,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 02:11:15,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1028335248] [2020-10-22 02:11:15,296 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:15,297 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:15,303 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-10-22 02:11:15,303 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:15,322 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 02:11:15,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 02:11:15,437 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [6007#(not (= 3 ~__unbuffered_cnt~0)), 6008#(not (= ~__unbuffered_cnt~0 2)), 6009#(not (= ~__unbuffered_cnt~0 1)), 6010#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:11:15,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 02:11:15,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:15,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 02:11:15,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-22 02:11:15,439 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 10 states. [2020-10-22 02:11:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:15,506 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-22 02:11:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:11:15,508 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-22 02:11:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:15,508 INFO L225 Difference]: With dead ends: 43 [2020-10-22 02:11:15,508 INFO L226 Difference]: Without dead ends: 37 [2020-10-22 02:11:15,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-22 02:11:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-22 02:11:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-22 02:11:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-22 02:11:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-22 02:11:15,512 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-22 02:11:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:15,512 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-22 02:11:15,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 02:11:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-22 02:11:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:11:15,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:15,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:15,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-22 02:11:15,517 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:15,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:15,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-10-22 02:11:15,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:15,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093616326] [2020-10-22 02:11:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:15,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093616326] [2020-10-22 02:11:15,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:15,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-22 02:11:15,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [560822498] [2020-10-22 02:11:15,638 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:15,640 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:15,643 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 42 transitions. [2020-10-22 02:11:15,643 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:15,835 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [6144#(and (= ~__unbuffered_p0_EBX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 6145#(and (= ~__unbuffered_p0_EBX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-10-22 02:11:15,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-22 02:11:15,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:15,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-22 02:11:15,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-22 02:11:15,836 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 12 states. [2020-10-22 02:11:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:16,037 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-22 02:11:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 02:11:16,038 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-22 02:11:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:16,038 INFO L225 Difference]: With dead ends: 36 [2020-10-22 02:11:16,038 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:11:16,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-22 02:11:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:11:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:11:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:11:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:11:16,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-22 02:11:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:16,040 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:11:16,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-22 02:11:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:11:16,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:11:16,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-22 02:11:16,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:11:16 BasicIcfg [2020-10-22 02:11:16,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:11:16,046 INFO L168 Benchmark]: Toolchain (without parser) took 6189.34 ms. Allocated memory was 139.5 MB in the beginning and 286.8 MB in the end (delta: 147.3 MB). Free memory was 100.5 MB in the beginning and 251.3 MB in the end (delta: -150.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:11:16,046 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:11:16,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.91 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 156.3 MB in the end (delta: -56.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:16,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.80 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 154.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:16,049 INFO L168 Benchmark]: Boogie Preprocessor took 27.06 ms. Allocated memory is still 202.4 MB. Free memory was 154.1 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:16,049 INFO L168 Benchmark]: RCFGBuilder took 475.88 ms. Allocated memory is still 202.4 MB. Free memory was 152.1 MB in the beginning and 127.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:16,050 INFO L168 Benchmark]: TraceAbstraction took 4945.31 ms. Allocated memory was 202.4 MB in the beginning and 286.8 MB in the end (delta: 84.4 MB). Free memory was 127.9 MB in the beginning and 251.3 MB in the end (delta: -123.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:11:16,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.91 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 99.7 MB in the beginning and 156.3 MB in the end (delta: -56.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.80 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 154.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.06 ms. Allocated memory is still 202.4 MB. Free memory was 154.1 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.88 ms. Allocated memory is still 202.4 MB. Free memory was 152.1 MB in the beginning and 127.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4945.31 ms. Allocated memory was 202.4 MB in the beginning and 286.8 MB in the end (delta: 84.4 MB). Free memory was 127.9 MB in the beginning and 251.3 MB in the end (delta: -123.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 756 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 226 SDtfs, 232 SDslu, 467 SDs, 0 SdLazy, 303 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 5884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...