/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 23:56:07,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 23:56:07,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 23:56:07,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 23:56:07,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 23:56:07,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 23:56:07,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 23:56:07,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 23:56:07,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 23:56:07,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 23:56:07,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 23:56:07,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 23:56:07,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 23:56:07,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 23:56:07,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 23:56:07,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 23:56:07,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 23:56:07,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 23:56:07,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 23:56:07,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 23:56:07,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 23:56:07,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 23:56:07,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 23:56:07,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 23:56:07,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-17 23:56:07,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-17 23:56:07,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-17 23:56:07,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-17 23:56:07,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-17 23:56:07,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-17 23:56:07,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 23:56:07,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 23:56:07,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 23:56:07,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 23:56:07,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 23:56:07,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 23:56:07,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 23:56:07,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 23:56:07,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 23:56:07,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 23:56:07,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 23:56:07,682 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-WP.epf [2020-09-17 23:56:07,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 23:56:07,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 23:56:07,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 23:56:07,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 23:56:07,731 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 23:56:07,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 23:56:07,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 23:56:07,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 23:56:07,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 23:56:07,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 23:56:07,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 23:56:07,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 23:56:07,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 23:56:07,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 23:56:07,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 23:56:07,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 23:56:07,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 23:56:07,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 23:56:07,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 23:56:07,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 23:56:07,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 23:56:07,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 23:56:07,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 23:56:07,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 23:56:07,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 23:56:07,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 23:56:07,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 23:56:07,738 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-17 23:56:07,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 23:56:07,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 23:56:07,738 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-17 23:56:08,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 23:56:08,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 23:56:08,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 23:56:08,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 23:56:08,234 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 23:56:08,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-09-17 23:56:08,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7404ea166/87016ca8b4b341559a83f25b95295978/FLAG285767029 [2020-09-17 23:56:08,966 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 23:56:08,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-09-17 23:56:08,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7404ea166/87016ca8b4b341559a83f25b95295978/FLAG285767029 [2020-09-17 23:56:09,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7404ea166/87016ca8b4b341559a83f25b95295978 [2020-09-17 23:56:09,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 23:56:09,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 23:56:09,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 23:56:09,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 23:56:09,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 23:56:09,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 11:56:09" (1/1) ... [2020-09-17 23:56:09,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ece116e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:09, skipping insertion in model container [2020-09-17 23:56:09,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 11:56:09" (1/1) ... [2020-09-17 23:56:09,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 23:56:09,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 23:56:09,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 23:56:09,848 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 23:56:09,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 23:56:10,007 INFO L208 MainTranslator]: Completed translation [2020-09-17 23:56:10,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10 WrapperNode [2020-09-17 23:56:10,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 23:56:10,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 23:56:10,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 23:56:10,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 23:56:10,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 23:56:10,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 23:56:10,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 23:56:10,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 23:56:10,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (1/1) ... [2020-09-17 23:56:10,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 23:56:10,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 23:56:10,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 23:56:10,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 23:56:10,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (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 [2020-09-17 23:56:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 23:56:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 23:56:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 23:56:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 23:56:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 23:56:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 23:56:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 23:56:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 23:56:10,205 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 23:56:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 23:56:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 23:56:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 23:56:10,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 23:56:10,208 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 23:56:10,575 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 23:56:10,575 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 23:56:10,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 11:56:10 BoogieIcfgContainer [2020-09-17 23:56:10,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 23:56:10,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 23:56:10,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 23:56:10,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 23:56:10,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 11:56:09" (1/3) ... [2020-09-17 23:56:10,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50048b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 11:56:10, skipping insertion in model container [2020-09-17 23:56:10,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 11:56:10" (2/3) ... [2020-09-17 23:56:10,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50048b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 11:56:10, skipping insertion in model container [2020-09-17 23:56:10,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 11:56:10" (3/3) ... [2020-09-17 23:56:10,592 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-09-17 23:56:10,605 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 23:56:10,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 23:56:10,615 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 23:56:10,616 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 23:56:10,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,651 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,651 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,652 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,652 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,655 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,655 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 23:56:10,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 23:56:10,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 23:56:10,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 23:56:10,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 23:56:10,732 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-17 23:56:10,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 23:56:10,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 23:56:10,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 23:56:10,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 23:56:10,751 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-17 23:56:10,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-17 23:56:10,814 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-17 23:56:10,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 23:56:10,821 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 23:56:10,825 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-17 23:56:10,864 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-17 23:56:10,867 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 23:56:10,868 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 23:56:10,873 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-17 23:56:10,875 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 23:56:12,310 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-17 23:56:12,471 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-17 23:56:12,472 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-17 23:56:12,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-17 23:56:12,509 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-17 23:56:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-17 23:56:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 23:56:12,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:12,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:12,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:12,532 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-17 23:56:12,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:12,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915824675] [2020-09-17 23:56:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:12,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915824675] [2020-09-17 23:56:12,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:12,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 23:56:12,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [128125739] [2020-09-17 23:56:12,819 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:12,823 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:12,842 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-17 23:56:12,842 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:12,845 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:12,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 23:56:12,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:12,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 23:56:12,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:12,867 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-17 23:56:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:12,919 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-17 23:56:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 23:56:12,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-17 23:56:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:12,942 INFO L225 Difference]: With dead ends: 290 [2020-09-17 23:56:12,942 INFO L226 Difference]: Without dead ends: 226 [2020-09-17 23:56:12,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:12,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-17 23:56:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-17 23:56:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-17 23:56:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-17 23:56:13,023 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-17 23:56:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:13,024 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-17 23:56:13,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 23:56:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-17 23:56:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 23:56:13,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:13,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:13,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 23:56:13,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:13,028 INFO L82 PathProgramCache]: Analyzing trace with hash 956609449, now seen corresponding path program 1 times [2020-09-17 23:56:13,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:13,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093492062] [2020-09-17 23:56:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:13,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093492062] [2020-09-17 23:56:13,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:13,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 23:56:13,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [767347545] [2020-09-17 23:56:13,123 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:13,124 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:13,127 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-17 23:56:13,127 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:13,160 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:13,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 23:56:13,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 23:56:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:13,163 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-17 23:56:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:13,172 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-09-17 23:56:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 23:56:13,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-17 23:56:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:13,176 INFO L225 Difference]: With dead ends: 212 [2020-09-17 23:56:13,176 INFO L226 Difference]: Without dead ends: 212 [2020-09-17 23:56:13,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-17 23:56:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-17 23:56:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-17 23:56:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-09-17 23:56:13,195 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-09-17 23:56:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:13,196 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-09-17 23:56:13,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 23:56:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-09-17 23:56:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 23:56:13,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:13,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:13,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 23:56:13,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:13,199 INFO L82 PathProgramCache]: Analyzing trace with hash -409878926, now seen corresponding path program 1 times [2020-09-17 23:56:13,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:13,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676290324] [2020-09-17 23:56:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:13,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676290324] [2020-09-17 23:56:13,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:13,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 23:56:13,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [470717493] [2020-09-17 23:56:13,306 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:13,307 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:13,309 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-17 23:56:13,309 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:13,348 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:13,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 23:56:13,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 23:56:13,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 23:56:13,349 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-09-17 23:56:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:13,379 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-17 23:56:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 23:56:13,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-17 23:56:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:13,382 INFO L225 Difference]: With dead ends: 242 [2020-09-17 23:56:13,382 INFO L226 Difference]: Without dead ends: 146 [2020-09-17 23:56:13,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 23:56:13,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-17 23:56:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-17 23:56:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-17 23:56:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-17 23:56:13,393 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-09-17 23:56:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:13,393 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-17 23:56:13,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 23:56:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-17 23:56:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 23:56:13,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:13,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:13,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 23:56:13,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-17 23:56:13,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:13,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124790501] [2020-09-17 23:56:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:13,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124790501] [2020-09-17 23:56:13,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:13,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-17 23:56:13,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [555865443] [2020-09-17 23:56:13,459 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:13,460 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:13,462 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-17 23:56:13,462 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:13,487 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:13,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 23:56:13,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 23:56:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:13,488 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-17 23:56:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:13,494 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-09-17 23:56:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 23:56:13,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-17 23:56:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:13,496 INFO L225 Difference]: With dead ends: 140 [2020-09-17 23:56:13,496 INFO L226 Difference]: Without dead ends: 140 [2020-09-17 23:56:13,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-17 23:56:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-17 23:56:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-17 23:56:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-09-17 23:56:13,506 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-09-17 23:56:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:13,506 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-09-17 23:56:13,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 23:56:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-09-17 23:56:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 23:56:13,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:13,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:13,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 23:56:13,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:13,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1352113053, now seen corresponding path program 1 times [2020-09-17 23:56:13,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:13,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836220924] [2020-09-17 23:56:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:13,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836220924] [2020-09-17 23:56:13,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:13,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 23:56:13,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688381850] [2020-09-17 23:56:13,610 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:13,611 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:13,616 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 47 transitions. [2020-09-17 23:56:13,617 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:13,707 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:13,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 23:56:13,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:13,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 23:56:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 23:56:13,708 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-09-17 23:56:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:13,730 INFO L93 Difference]: Finished difference Result 200 states and 485 transitions. [2020-09-17 23:56:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 23:56:13,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 23:56:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:13,732 INFO L225 Difference]: With dead ends: 200 [2020-09-17 23:56:13,732 INFO L226 Difference]: Without dead ends: 110 [2020-09-17 23:56:13,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 23:56:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-17 23:56:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-17 23:56:13,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-17 23:56:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-17 23:56:13,740 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 12 [2020-09-17 23:56:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:13,740 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-17 23:56:13,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 23:56:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-17 23:56:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 23:56:13,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:13,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:13,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 23:56:13,742 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash -2097233879, now seen corresponding path program 2 times [2020-09-17 23:56:13,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:13,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964930328] [2020-09-17 23:56:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:13,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964930328] [2020-09-17 23:56:13,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:13,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 23:56:13,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [859766683] [2020-09-17 23:56:13,818 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:13,820 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:13,822 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-17 23:56:13,823 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:13,854 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:13,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 23:56:13,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:13,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 23:56:13,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 23:56:13,856 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 4 states. [2020-09-17 23:56:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:13,878 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-09-17 23:56:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 23:56:13,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 23:56:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:13,879 INFO L225 Difference]: With dead ends: 128 [2020-09-17 23:56:13,879 INFO L226 Difference]: Without dead ends: 68 [2020-09-17 23:56:13,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 23:56:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-17 23:56:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-17 23:56:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-17 23:56:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-17 23:56:13,884 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-09-17 23:56:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:13,884 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-17 23:56:13,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 23:56:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-17 23:56:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 23:56:13,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:13,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:13,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 23:56:13,886 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:13,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:13,887 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-09-17 23:56:13,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:13,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250729962] [2020-09-17 23:56:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:13,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250729962] [2020-09-17 23:56:13,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:13,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 23:56:13,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1695550772] [2020-09-17 23:56:13,967 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:13,969 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:13,972 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-17 23:56:13,972 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:13,998 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-17 23:56:14,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-17 23:56:14,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-17 23:56:14,095 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-17 23:56:14,123 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-17 23:56:14,141 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3724#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-17 23:56:14,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 23:56:14,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:14,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 23:56:14,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 23:56:14,142 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-09-17 23:56:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:14,214 INFO L93 Difference]: Finished difference Result 67 states and 126 transitions. [2020-09-17 23:56:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 23:56:14,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 23:56:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:14,216 INFO L225 Difference]: With dead ends: 67 [2020-09-17 23:56:14,216 INFO L226 Difference]: Without dead ends: 45 [2020-09-17 23:56:14,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 23:56:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-17 23:56:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-17 23:56:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-17 23:56:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-17 23:56:14,219 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 13 [2020-09-17 23:56:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:14,220 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-17 23:56:14,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 23:56:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-17 23:56:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 23:56:14,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:14,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:14,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 23:56:14,222 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-17 23:56:14,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:14,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896177100] [2020-09-17 23:56:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:14,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896177100] [2020-09-17 23:56:14,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:14,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 23:56:14,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2015400070] [2020-09-17 23:56:14,311 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:14,312 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:14,316 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-17 23:56:14,317 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:14,343 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-17 23:56:14,371 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3892#(<= ~__unbuffered_cnt~0 0)] [2020-09-17 23:56:14,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 23:56:14,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 23:56:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 23:56:14,372 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 7 states. [2020-09-17 23:56:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:14,424 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-17 23:56:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 23:56:14,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-17 23:56:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:14,425 INFO L225 Difference]: With dead ends: 42 [2020-09-17 23:56:14,425 INFO L226 Difference]: Without dead ends: 36 [2020-09-17 23:56:14,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-17 23:56:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-17 23:56:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-17 23:56:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-17 23:56:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-17 23:56:14,428 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-17 23:56:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:14,428 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-17 23:56:14,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 23:56:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-17 23:56:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 23:56:14,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 23:56:14,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 23:56:14,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 23:56:14,430 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 23:56:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 23:56:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-17 23:56:14,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 23:56:14,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966393083] [2020-09-17 23:56:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 23:56:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 23:56:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 23:56:14,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966393083] [2020-09-17 23:56:14,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 23:56:14,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 23:56:14,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2012576493] [2020-09-17 23:56:14,475 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 23:56:14,477 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 23:56:14,481 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-09-17 23:56:14,482 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 23:56:14,485 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 23:56:14,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 23:56:14,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 23:56:14,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 23:56:14,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:14,487 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-17 23:56:14,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 23:56:14,491 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-17 23:56:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 23:56:14,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-17 23:56:14,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 23:56:14,492 INFO L225 Difference]: With dead ends: 35 [2020-09-17 23:56:14,492 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 23:56:14,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 23:56:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 23:56:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 23:56:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 23:56:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 23:56:14,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-17 23:56:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 23:56:14,494 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 23:56:14,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 23:56:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 23:56:14,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 23:56:14,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 23:56:14,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 11:56:14 BasicIcfg [2020-09-17 23:56:14,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 23:56:14,502 INFO L168 Benchmark]: Toolchain (without parser) took 5297.80 ms. Allocated memory was 139.5 MB in the beginning and 249.6 MB in the end (delta: 110.1 MB). Free memory was 100.0 MB in the beginning and 126.7 MB in the end (delta: -26.7 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,503 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.37 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 99.4 MB in the beginning and 162.9 MB in the end (delta: -63.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.37 ms. Allocated memory is still 205.0 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,505 INFO L168 Benchmark]: Boogie Preprocessor took 33.11 ms. Allocated memory is still 205.0 MB. Free memory was 160.9 MB in the beginning and 159.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,506 INFO L168 Benchmark]: RCFGBuilder took 465.45 ms. Allocated memory is still 205.0 MB. Free memory was 158.9 MB in the beginning and 137.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,507 INFO L168 Benchmark]: TraceAbstraction took 3916.47 ms. Allocated memory was 205.0 MB in the beginning and 249.6 MB in the end (delta: 44.6 MB). Free memory was 136.5 MB in the beginning and 126.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-09-17 23:56:14,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 798.37 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 99.4 MB in the beginning and 162.9 MB in the end (delta: -63.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 72.37 ms. Allocated memory is still 205.0 MB. Free memory was 162.9 MB in the beginning and 160.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.11 ms. Allocated memory is still 205.0 MB. Free memory was 160.9 MB in the beginning and 159.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.45 ms. Allocated memory is still 205.0 MB. Free memory was 158.9 MB in the beginning and 137.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3916.47 ms. Allocated memory was 205.0 MB in the beginning and 249.6 MB in the end (delta: 44.6 MB). Free memory was 136.5 MB in the beginning and 126.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 158 SDtfs, 102 SDslu, 167 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...