/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/safe007_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:08:08,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:08:08,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:08:08,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:08:08,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:08:08,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:08:08,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:08:08,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:08:08,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:08:08,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:08:08,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:08:08,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:08:08,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:08:08,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:08:08,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:08:08,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:08:08,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:08:08,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:08:08,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:08:08,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:08:08,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:08:08,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:08:08,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:08:08,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:08:08,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:08:08,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:08:08,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:08:08,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:08:08,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:08:08,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:08:08,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:08:08,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:08:08,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:08:08,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:08:08,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:08:08,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:08:08,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:08:08,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:08:08,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:08:08,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:08:08,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:08:08,876 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 [2020-09-15 23:08:08,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:08:08,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:08:08,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:08:08,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:08:08,904 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:08:08,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:08:08,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:08:08,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:08:08,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:08:08,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:08:08,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:08:08,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:08:08,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:08:08,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:08:08,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:08:08,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:08:08,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:08:08,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:08:08,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:08:08,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:08:08,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:08:08,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:08:08,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:08:08,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:08:08,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:08:08,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:08:08,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:08:08,908 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:08:08,908 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:08:08,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:08:08,909 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:08:09,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:08:09,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:08:09,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:08:09,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:08:09,403 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:08:09,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-09-15 23:08:09,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4f51ee8/f6360b3f9a5f4fd59af64353f7e60b81/FLAG6302c0e22 [2020-09-15 23:08:10,171 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:08:10,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-09-15 23:08:10,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4f51ee8/f6360b3f9a5f4fd59af64353f7e60b81/FLAG6302c0e22 [2020-09-15 23:08:10,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4f51ee8/f6360b3f9a5f4fd59af64353f7e60b81 [2020-09-15 23:08:10,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:08:10,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:08:10,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:08:10,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:08:10,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:08:10,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:08:10" (1/1) ... [2020-09-15 23:08:10,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42178c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:10, skipping insertion in model container [2020-09-15 23:08:10,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:08:10" (1/1) ... [2020-09-15 23:08:10,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:08:10,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:08:10,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:08:10,952 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:08:11,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:08:11,118 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:08:11,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11 WrapperNode [2020-09-15 23:08:11,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:08:11,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:08:11,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:08:11,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:08:11,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:08:11,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:08:11,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:08:11,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:08:11,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (1/1) ... [2020-09-15 23:08:11,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:08:11,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:08:11,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:08:11,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:08:11,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (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 [2020-09-15 23:08:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:08:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:08:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:08:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:08:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:08:11,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:08:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:08:11,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:08:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:08:11,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:08:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:08:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:08:11,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:08:11,340 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:08:11,702 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:08:11,703 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:08:11,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:08:11 BoogieIcfgContainer [2020-09-15 23:08:11,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:08:11,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:08:11,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:08:11,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:08:11,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:08:10" (1/3) ... [2020-09-15 23:08:11,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32667d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:08:11, skipping insertion in model container [2020-09-15 23:08:11,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:08:11" (2/3) ... [2020-09-15 23:08:11,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32667d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:08:11, skipping insertion in model container [2020-09-15 23:08:11,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:08:11" (3/3) ... [2020-09-15 23:08:11,719 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2020-09-15 23:08:11,730 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:08:11,731 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:08:11,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:08:11,742 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:08:11,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,777 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,777 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,779 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,779 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,780 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,781 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,781 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,782 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,786 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,787 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,787 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,797 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,798 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,808 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,809 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:08:11,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:08:11,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:08:11,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:08:11,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:08:11,873 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:08:11,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:08:11,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:08:11,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:08:11,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:08:11,892 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-15 23:08:11,894 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-15 23:08:11,948 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-15 23:08:11,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:08:11,955 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-15 23:08:11,958 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-15 23:08:11,981 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-15 23:08:11,981 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:08:11,982 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 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. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-15 23:08:11,985 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 23:08:11,986 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:08:13,248 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-15 23:08:13,350 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-09-15 23:08:13,351 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-15 23:08:13,355 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-15 23:08:13,388 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-15 23:08:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-15 23:08:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:08:13,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:13,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:13,403 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-09-15 23:08:13,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:13,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97027779] [2020-09-15 23:08:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:13,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97027779] [2020-09-15 23:08:13,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:13,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:08:13,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [691039421] [2020-09-15 23:08:13,642 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:13,645 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:13,662 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:08:13,663 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:13,665 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:13,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-15 23:08:13,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:13,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-15 23:08:13,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 23:08:13,689 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-15 23:08:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:13,716 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-15 23:08:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-15 23:08:13,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-15 23:08:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:13,735 INFO L225 Difference]: With dead ends: 362 [2020-09-15 23:08:13,736 INFO L226 Difference]: Without dead ends: 298 [2020-09-15 23:08:13,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 23:08:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-15 23:08:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-15 23:08:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-15 23:08:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-15 23:08:13,822 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-15 23:08:13,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:13,823 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-15 23:08:13,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-15 23:08:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-15 23:08:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:08:13,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:13,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:13,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:08:13,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-09-15 23:08:13,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:13,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820356293] [2020-09-15 23:08:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:13,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820356293] [2020-09-15 23:08:13,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:13,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:08:13,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1112429485] [2020-09-15 23:08:13,977 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:13,978 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:13,980 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-15 23:08:13,980 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:13,981 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:13,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:08:13,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:08:13,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:08:13,983 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-09-15 23:08:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:14,024 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-15 23:08:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:08:14,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-15 23:08:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:14,028 INFO L225 Difference]: With dead ends: 330 [2020-09-15 23:08:14,029 INFO L226 Difference]: Without dead ends: 266 [2020-09-15 23:08:14,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:08:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-15 23:08:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-15 23:08:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-15 23:08:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-15 23:08:14,054 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-15 23:08:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:14,055 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-15 23:08:14,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:08:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-15 23:08:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:08:14,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:14,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:14,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:08:14,057 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:14,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-09-15 23:08:14,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:14,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125357981] [2020-09-15 23:08:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:14,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125357981] [2020-09-15 23:08:14,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:14,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:08:14,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1181468515] [2020-09-15 23:08:14,165 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:14,166 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:14,167 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-09-15 23:08:14,168 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:14,175 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:14,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:08:14,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:14,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:08:14,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:08:14,176 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-15 23:08:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:14,246 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-15 23:08:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:08:14,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-15 23:08:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:14,249 INFO L225 Difference]: With dead ends: 290 [2020-09-15 23:08:14,249 INFO L226 Difference]: Without dead ends: 242 [2020-09-15 23:08:14,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:08:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-15 23:08:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-15 23:08:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-15 23:08:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-15 23:08:14,267 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-15 23:08:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:14,267 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-15 23:08:14,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:08:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-15 23:08:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:08:14,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:14,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:14,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:08:14,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:14,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-09-15 23:08:14,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:14,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439394715] [2020-09-15 23:08:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:14,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439394715] [2020-09-15 23:08:14,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:14,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:08:14,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646479049] [2020-09-15 23:08:14,370 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:14,371 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:14,373 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-15 23:08:14,374 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:14,459 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:14,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:08:14,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:08:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:08:14,460 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-09-15 23:08:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:14,490 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-09-15 23:08:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:08:14,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 23:08:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:14,493 INFO L225 Difference]: With dead ends: 260 [2020-09-15 23:08:14,493 INFO L226 Difference]: Without dead ends: 224 [2020-09-15 23:08:14,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:08:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-15 23:08:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-09-15 23:08:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-15 23:08:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-09-15 23:08:14,504 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-09-15 23:08:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:14,505 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-09-15 23:08:14,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:08:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-09-15 23:08:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:08:14,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:14,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:14,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:08:14,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 368404844, now seen corresponding path program 1 times [2020-09-15 23:08:14,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:14,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018195682] [2020-09-15 23:08:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:14,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018195682] [2020-09-15 23:08:14,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:14,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:08:14,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [545104183] [2020-09-15 23:08:14,605 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:14,607 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:14,613 INFO L274 McrAutomatonBuilder]: Finished intersection with 32 states and 58 transitions. [2020-09-15 23:08:14,614 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:14,748 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:14,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:08:14,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:14,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:08:14,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:08:14,749 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-09-15 23:08:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:14,814 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-09-15 23:08:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:08:14,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-15 23:08:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:14,816 INFO L225 Difference]: With dead ends: 293 [2020-09-15 23:08:14,816 INFO L226 Difference]: Without dead ends: 146 [2020-09-15 23:08:14,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:08:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-15 23:08:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-15 23:08:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-15 23:08:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-09-15 23:08:14,822 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-09-15 23:08:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:14,823 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-09-15 23:08:14,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:08:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-09-15 23:08:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:08:14,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:14,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:14,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:08:14,825 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-09-15 23:08:14,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:14,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758588294] [2020-09-15 23:08:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:14,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758588294] [2020-09-15 23:08:14,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:14,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:08:14,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [690314440] [2020-09-15 23:08:14,949 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:14,952 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:14,957 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-09-15 23:08:14,957 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:15,111 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:15,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:08:15,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:15,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:08:15,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:08:15,113 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 5 states. [2020-09-15 23:08:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:15,167 INFO L93 Difference]: Finished difference Result 188 states and 451 transitions. [2020-09-15 23:08:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:08:15,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 23:08:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:15,168 INFO L225 Difference]: With dead ends: 188 [2020-09-15 23:08:15,168 INFO L226 Difference]: Without dead ends: 74 [2020-09-15 23:08:15,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:08:15,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-15 23:08:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-15 23:08:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-15 23:08:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-09-15 23:08:15,175 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 13 [2020-09-15 23:08:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:15,175 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-09-15 23:08:15,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:08:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-09-15 23:08:15,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:08:15,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:08:15,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:08:15,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:08:15,177 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:08:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:08:15,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2118870046, now seen corresponding path program 1 times [2020-09-15 23:08:15,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:08:15,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804371038] [2020-09-15 23:08:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:08:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:08:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:08:15,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804371038] [2020-09-15 23:08:15,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:08:15,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:08:15,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1158028618] [2020-09-15 23:08:15,284 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:08:15,286 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:08:15,290 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-09-15 23:08:15,290 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:08:15,303 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:08:15,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:08:15,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:08:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:08:15,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:08:15,305 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 5 states. [2020-09-15 23:08:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:08:15,346 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-09-15 23:08:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:08:15,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-15 23:08:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:08:15,347 INFO L225 Difference]: With dead ends: 62 [2020-09-15 23:08:15,347 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:08:15,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:08:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:08:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:08:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:08:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:08:15,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-15 23:08:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:08:15,349 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:08:15,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:08:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:08:15,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:08:15,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:08:15,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:08:15 BasicIcfg [2020-09-15 23:08:15,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:08:15,364 INFO L168 Benchmark]: Toolchain (without parser) took 4964.81 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 102.1 MB in the beginning and 157.3 MB in the end (delta: -55.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:08:15,367 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 23:08:15,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.17 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 157.9 MB in the end (delta: -56.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:08:15,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.31 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:08:15,374 INFO L168 Benchmark]: Boogie Preprocessor took 36.34 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:08:15,374 INFO L168 Benchmark]: RCFGBuilder took 458.97 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-15 23:08:15,375 INFO L168 Benchmark]: TraceAbstraction took 3650.19 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 130.7 MB in the beginning and 157.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:08:15,388 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.17 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 157.9 MB in the end (delta: -56.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 92.31 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.34 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.97 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3650.19 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 130.7 MB in the beginning and 157.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 668 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2463 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 151 SDtfs, 152 SDslu, 227 SDs, 0 SdLazy, 66 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 2725 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...