/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/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:55:14,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:55:14,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:55:14,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:55:14,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:55:14,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:55:14,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:55:14,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:55:14,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:55:14,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:55:14,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:55:14,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:55:14,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:55:14,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:55:14,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:55:14,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:55:14,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:55:14,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:55:14,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:55:14,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:55:14,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:55:14,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:55:14,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:55:14,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:55:14,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 23:55:14,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:55:14,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:55:14,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:55:14,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:55:14,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:55:14,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:55:14,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:55:14,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:55:14,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:55:14,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:55:14,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:55:14,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:55:14,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:55:14,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:55:14,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:55:14,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:55:14,795 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:55:14,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:55:14,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:55:14,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:55:14,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:55:14,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:55:14,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:55:14,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:55:14,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:55:14,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:55:14,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:55:14,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:55:14,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:55:14,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:55:14,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:55:14,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:55:14,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:55:14,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:55:14,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:55:14,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:55:14,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:55:14,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:55:14,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:55:14,800 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:55:14,800 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:55:14,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:55:14,801 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:55:15,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:55:15,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:55:15,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:55:15,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:55:15,252 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:55:15,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-09-11 23:55:15,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6e5b3058/236909d6c50e409598a996967dc17f23/FLAG1ef86d8c2 [2020-09-11 23:55:15,979 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:55:15,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-09-11 23:55:15,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6e5b3058/236909d6c50e409598a996967dc17f23/FLAG1ef86d8c2 [2020-09-11 23:55:16,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6e5b3058/236909d6c50e409598a996967dc17f23 [2020-09-11 23:55:16,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:55:16,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:55:16,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:55:16,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:55:16,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:55:16,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:16,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16, skipping insertion in model container [2020-09-11 23:55:16,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:16,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:55:16,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:55:16,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:55:16,806 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:55:16,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:55:16,977 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:55:16,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16 WrapperNode [2020-09-11 23:55:16,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:55:16,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:55:16,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:55:16,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:55:16,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:55:17,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:55:17,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:55:17,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:55:17,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... [2020-09-11 23:55:17,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:55:17,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:55:17,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:55:17,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:55:17,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:55:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:55:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:55:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:55:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:55:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:55:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:55:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:55:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:55:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:55:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:55:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:55:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:55:17,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:55:17,159 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:55:17,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:55:17,532 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:55:17,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:55:17 BoogieIcfgContainer [2020-09-11 23:55:17,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:55:17,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:55:17,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:55:17,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:55:17,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:55:16" (1/3) ... [2020-09-11 23:55:17,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f4fd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:55:17, skipping insertion in model container [2020-09-11 23:55:17,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:55:16" (2/3) ... [2020-09-11 23:55:17,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f4fd7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:55:17, skipping insertion in model container [2020-09-11 23:55:17,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:55:17" (3/3) ... [2020-09-11 23:55:17,548 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-09-11 23:55:17,560 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:55:17,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:55:17,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:55:17,572 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:55:17,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,602 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,602 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,603 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,603 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,603 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,605 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,606 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,607 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,628 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:55:17,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:55:17,678 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:55:17,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:55:17,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:55:17,679 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:55:17,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:55:17,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:55:17,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:55:17,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:55:17,698 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:55:17,701 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:55:17,758 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:55:17,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:55:17,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:55:17,768 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:55:17,790 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:55:17,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:55:17,792 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:55:17,794 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:55:17,797 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:55:19,211 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-11 23:55:19,418 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-11 23:55:19,419 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:55:19,428 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:55:19,455 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:55:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:55:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:55:19,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:19,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:19,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:19,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:19,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-11 23:55:19,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:19,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842606049] [2020-09-11 23:55:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:19,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842606049] [2020-09-11 23:55:19,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:19,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:55:19,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [564249317] [2020-09-11 23:55:19,839 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:19,843 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:19,862 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:55:19,862 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:19,865 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:55:19,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:55:19,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:55:19,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:55:19,888 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:55:19,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:19,927 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:55:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:55:19,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:55:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:19,949 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:55:19,949 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:55:19,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:55:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:55:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:55:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:55:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:55:20,034 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:55:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:20,036 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:55:20,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:55:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:55:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:55:20,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:20,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:20,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:55:20,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-09-11 23:55:20,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:20,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174580098] [2020-09-11 23:55:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:20,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174580098] [2020-09-11 23:55:20,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:20,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:55:20,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1137149891] [2020-09-11 23:55:20,115 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:20,116 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:20,118 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-11 23:55:20,118 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:20,136 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:55:20,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:55:20,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:55:20,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:55:20,139 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:55:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:20,169 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:55:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:55:20,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:55:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:20,171 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:55:20,171 INFO L226 Difference]: Without dead ends: 146 [2020-09-11 23:55:20,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:55:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-11 23:55:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-11 23:55:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 23:55:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-11 23:55:20,195 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-11 23:55:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:20,195 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-11 23:55:20,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:55:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-11 23:55:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:55:20,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:20,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:20,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:55:20,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-11 23:55:20,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:20,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778878311] [2020-09-11 23:55:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:20,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778878311] [2020-09-11 23:55:20,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:20,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:55:20,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [174376584] [2020-09-11 23:55:20,268 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:20,269 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:20,271 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-11 23:55:20,271 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:20,320 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:55:20,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:55:20,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:20,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:55:20,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:55:20,322 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-11 23:55:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:20,328 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-09-11 23:55:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:55:20,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:55:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:20,330 INFO L225 Difference]: With dead ends: 134 [2020-09-11 23:55:20,330 INFO L226 Difference]: Without dead ends: 134 [2020-09-11 23:55:20,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:55:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-11 23:55:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-11 23:55:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-11 23:55:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-09-11 23:55:20,339 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-09-11 23:55:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:20,340 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-09-11 23:55:20,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:55:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-09-11 23:55:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:55:20,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:20,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:20,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:55:20,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:20,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:20,343 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-09-11 23:55:20,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:20,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103967455] [2020-09-11 23:55:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:20,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103967455] [2020-09-11 23:55:20,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:20,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:55:20,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1011190992] [2020-09-11 23:55:20,424 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:20,425 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:20,430 INFO L274 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-09-11 23:55:20,430 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:20,474 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,520 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,598 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,636 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,658 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,696 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,717 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:20,732 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2347#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:55:20,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:55:20,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:55:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:55:20,733 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 5 states. [2020-09-11 23:55:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:20,807 INFO L93 Difference]: Finished difference Result 135 states and 308 transitions. [2020-09-11 23:55:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:55:20,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 23:55:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:20,809 INFO L225 Difference]: With dead ends: 135 [2020-09-11 23:55:20,809 INFO L226 Difference]: Without dead ends: 95 [2020-09-11 23:55:20,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:55:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-11 23:55:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-09-11 23:55:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-11 23:55:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 198 transitions. [2020-09-11 23:55:20,816 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 198 transitions. Word has length 13 [2020-09-11 23:55:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:20,816 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 198 transitions. [2020-09-11 23:55:20,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:55:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 198 transitions. [2020-09-11 23:55:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:55:20,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:20,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:20,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:55:20,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-09-11 23:55:20,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:20,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677187216] [2020-09-11 23:55:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:20,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677187216] [2020-09-11 23:55:20,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:20,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:55:20,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [939859262] [2020-09-11 23:55:20,964 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:20,966 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:20,973 INFO L274 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-09-11 23:55:20,973 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:21,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:55:21,158 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2688#(<= ~__unbuffered_cnt~0 0), 2685#(not (= 3 ~__unbuffered_cnt~0)), 2686#(not (= ~__unbuffered_cnt~0 2)), 2687#(not (= ~__unbuffered_cnt~0 1))] [2020-09-11 23:55:21,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 23:55:21,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 23:55:21,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:55:21,160 INFO L87 Difference]: Start difference. First operand 95 states and 198 transitions. Second operand 10 states. [2020-09-11 23:55:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:21,266 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-09-11 23:55:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:55:21,266 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-11 23:55:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:21,267 INFO L225 Difference]: With dead ends: 92 [2020-09-11 23:55:21,267 INFO L226 Difference]: Without dead ends: 84 [2020-09-11 23:55:21,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:55:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-11 23:55:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-11 23:55:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-11 23:55:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-09-11 23:55:21,273 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 15 [2020-09-11 23:55:21,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:21,273 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-09-11 23:55:21,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 23:55:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-09-11 23:55:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:55:21,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:21,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:21,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:55:21,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:21,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-11 23:55:21,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:21,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186551016] [2020-09-11 23:55:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:21,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186551016] [2020-09-11 23:55:21,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:21,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:55:21,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [672876737] [2020-09-11 23:55:21,332 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:21,334 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:21,342 INFO L274 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-09-11 23:55:21,342 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:21,414 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:55:21,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:55:21,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:21,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:55:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:55:21,416 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-09-11 23:55:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:21,444 INFO L93 Difference]: Finished difference Result 143 states and 291 transitions. [2020-09-11 23:55:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:55:21,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:55:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:21,446 INFO L225 Difference]: With dead ends: 143 [2020-09-11 23:55:21,446 INFO L226 Difference]: Without dead ends: 65 [2020-09-11 23:55:21,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:55:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-11 23:55:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-11 23:55:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-11 23:55:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 130 transitions. [2020-09-11 23:55:21,450 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 130 transitions. Word has length 17 [2020-09-11 23:55:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:21,450 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 130 transitions. [2020-09-11 23:55:21,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:55:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 130 transitions. [2020-09-11 23:55:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:55:21,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:55:21,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:55:21,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:55:21,453 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:55:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:55:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1083077880, now seen corresponding path program 2 times [2020-09-11 23:55:21,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:55:21,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277312274] [2020-09-11 23:55:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:55:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:55:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:55:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277312274] [2020-09-11 23:55:21,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:55:21,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:55:21,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2003044246] [2020-09-11 23:55:21,550 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:55:21,555 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:55:21,565 INFO L274 McrAutomatonBuilder]: Finished intersection with 62 states and 114 transitions. [2020-09-11 23:55:21,565 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:55:21,720 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:55:21,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:55:21,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:55:21,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:55:21,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:55:21,722 INFO L87 Difference]: Start difference. First operand 65 states and 130 transitions. Second operand 4 states. [2020-09-11 23:55:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:55:21,737 INFO L93 Difference]: Finished difference Result 64 states and 129 transitions. [2020-09-11 23:55:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:55:21,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:55:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:55:21,738 INFO L225 Difference]: With dead ends: 64 [2020-09-11 23:55:21,738 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:55:21,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:55:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:55:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:55:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:55:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:55:21,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:55:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:55:21,740 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:55:21,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:55:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:55:21,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:55:21,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:55:21,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:55:21 BasicIcfg [2020-09-11 23:55:21,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:55:21,748 INFO L168 Benchmark]: Toolchain (without parser) took 5508.25 ms. Allocated memory was 140.0 MB in the beginning and 283.1 MB in the end (delta: 143.1 MB). Free memory was 100.5 MB in the beginning and 229.7 MB in the end (delta: -129.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:55:21,749 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-11 23:55:21,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.33 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 99.9 MB in the beginning and 162.8 MB in the end (delta: -63.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:55:21,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.36 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 160.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:55:21,751 INFO L168 Benchmark]: Boogie Preprocessor took 32.60 ms. Allocated memory is still 205.0 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:55:21,752 INFO L168 Benchmark]: RCFGBuilder took 465.24 ms. Allocated memory is still 205.0 MB. Free memory was 158.7 MB in the beginning and 137.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:55:21,753 INFO L168 Benchmark]: TraceAbstraction took 4206.31 ms. Allocated memory was 205.0 MB in the beginning and 283.1 MB in the end (delta: 78.1 MB). Free memory was 136.4 MB in the beginning and 229.7 MB in the end (delta: -93.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:55:21,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.33 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 99.9 MB in the beginning and 162.8 MB in the end (delta: -63.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.36 ms. Allocated memory is still 205.0 MB. Free memory was 162.8 MB in the beginning and 160.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.60 ms. Allocated memory is still 205.0 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.24 ms. Allocated memory is still 205.0 MB. Free memory was 158.7 MB in the beginning and 137.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4206.31 ms. Allocated memory was 205.0 MB in the beginning and 283.1 MB in the end (delta: 78.1 MB). Free memory was 136.4 MB in the beginning and 229.7 MB in the end (delta: -93.3 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 LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 130 SDtfs, 112 SDslu, 203 SDs, 0 SdLazy, 112 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 226 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...