/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:15:33,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:15:33,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:15:33,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:15:33,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:15:33,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:15:33,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:15:33,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:15:33,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:15:33,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:15:33,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:15:33,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:15:33,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:15:33,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:15:33,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:15:33,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:15:33,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:15:33,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:15:33,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:15:33,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:15:33,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:15:33,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:15:33,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:15:33,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:15:33,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:15:33,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:15:33,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:15:33,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:15:33,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:15:33,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:15:33,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:15:33,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:15:33,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:15:33,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:15:33,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:15:33,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:15:33,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:15:33,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:15:33,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:15:33,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:15:33,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:15:33,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:15:33,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:15:33,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:15:33,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:15:33,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:15:33,754 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:15:33,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:15:33,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:15:33,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:15:33,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:15:33,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:15:33,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:15:33,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:15:33,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:15:33,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:15:33,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:15:33,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:15:33,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:15:33,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:15:33,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:15:33,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:15:33,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:15:33,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:15:33,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:15:33,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:15:33,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:15:33,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:15:33,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:15:33,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:15:33,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:15:33,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:15:34,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:15:34,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:15:34,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:15:34,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:15:34,313 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:15:34,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 10:15:34,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfdfeab85/44f4e574a40c497387038db7fd4b75b0/FLAGd1fd3cb75 [2020-09-25 10:15:34,955 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:15:34,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 10:15:34,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfdfeab85/44f4e574a40c497387038db7fd4b75b0/FLAGd1fd3cb75 [2020-09-25 10:15:35,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfdfeab85/44f4e574a40c497387038db7fd4b75b0 [2020-09-25 10:15:35,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:15:35,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:15:35,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:15:35,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:15:35,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:15:35,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f43d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35, skipping insertion in model container [2020-09-25 10:15:35,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:15:35,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:15:35,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:15:35,598 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:15:35,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:15:35,636 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:15:35,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35 WrapperNode [2020-09-25 10:15:35,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:15:35,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:15:35,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:15:35,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:15:35,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (1/1) ... [2020-09-25 10:15:35,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:15:35,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:15:35,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:15:35,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:15:35,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (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 [2020-09-25 10:15:35,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:15:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:15:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:15:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 10:15:35,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:15:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:15:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:15:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:15:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 10:15:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:15:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:15:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:15:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:15:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:15:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:15:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:15:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:15:36,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:15:36,138 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 10:15:36,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:15:36 BoogieIcfgContainer [2020-09-25 10:15:36,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:15:36,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:15:36,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:15:36,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:15:36,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:15:35" (1/3) ... [2020-09-25 10:15:36,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4779cf79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:15:36, skipping insertion in model container [2020-09-25 10:15:36,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:35" (2/3) ... [2020-09-25 10:15:36,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4779cf79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:15:36, skipping insertion in model container [2020-09-25 10:15:36,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:15:36" (3/3) ... [2020-09-25 10:15:36,157 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 10:15:36,173 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:15:36,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:15:36,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:15:36,250 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:15:36,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:15:36,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:15:36,251 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:15:36,251 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:15:36,251 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:15:36,251 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:15:36,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:15:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 10:15:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:15:36,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:36,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:36,290 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 10:15:36,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:36,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101770307] [2020-09-25 10:15:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:36,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:15:36,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:15:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 10:15:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:36,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:15:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 10:15:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 10:15:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:15:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:36,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:36,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:15:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:36,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:36,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:37,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:15:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:15:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:15:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:15:37,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:37,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:15:37,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101770307] [2020-09-25 10:15:37,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:15:37,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:15:37,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780611795] [2020-09-25 10:15:37,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:15:37,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:37,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:15:37,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:15:37,067 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-09-25 10:15:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:37,368 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-09-25 10:15:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:15:37,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 10:15:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:37,388 INFO L225 Difference]: With dead ends: 109 [2020-09-25 10:15:37,389 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 10:15:37,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:15:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 10:15:37,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 10:15:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:15:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 10:15:37,464 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 10:15:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:37,465 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 10:15:37,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:15:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 10:15:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 10:15:37,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:37,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:37,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:15:37,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:37,469 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 10:15:37,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:37,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770809228] [2020-09-25 10:15:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:39,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:39,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:15:39,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:15:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1989 [2020-09-25 10:15:39,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:39,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:15:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 10:15:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:15:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:39,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:39,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:39,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:39,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:15:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:39,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:15:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:39,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:39,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:15:39,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:15:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:15:39,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:39,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:15:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:15:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:15:39,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:15:39,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770809228] [2020-09-25 10:15:39,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:15:39,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:15:39,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609942950] [2020-09-25 10:15:39,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:15:39,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:39,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:15:39,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:15:39,811 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 14 states. [2020-09-25 10:15:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:40,838 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2020-09-25 10:15:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:15:40,839 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-09-25 10:15:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:40,841 INFO L225 Difference]: With dead ends: 128 [2020-09-25 10:15:40,841 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 10:15:40,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:15:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 10:15:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2020-09-25 10:15:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 10:15:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-09-25 10:15:40,858 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2020-09-25 10:15:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:40,858 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-09-25 10:15:40,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:15:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-09-25 10:15:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:15:40,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:40,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:40,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:15:40,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:40,877 INFO L82 PathProgramCache]: Analyzing trace with hash -253984627, now seen corresponding path program 1 times [2020-09-25 10:15:40,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:40,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371508356] [2020-09-25 10:15:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:42,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:15:42,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:15:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-09-25 10:15:42,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:42,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:42,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:15:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:15:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:15:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:42,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:42,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:42,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:42,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:15:42,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:42,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:15:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:42,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 10:15:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:15:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:42,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:15:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:15:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:15:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:15:42,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371508356] [2020-09-25 10:15:42,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:15:42,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:15:42,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778156921] [2020-09-25 10:15:42,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:15:42,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:15:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:15:42,582 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 9 states. [2020-09-25 10:15:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:42,884 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2020-09-25 10:15:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:15:42,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 10:15:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:42,886 INFO L225 Difference]: With dead ends: 129 [2020-09-25 10:15:42,886 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 10:15:42,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:15:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 10:15:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-09-25 10:15:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 10:15:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 10:15:42,898 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 43 [2020-09-25 10:15:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:42,899 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 10:15:42,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:15:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 10:15:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 10:15:42,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:42,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:42,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:15:42,902 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:42,902 INFO L82 PathProgramCache]: Analyzing trace with hash 825760649, now seen corresponding path program 2 times [2020-09-25 10:15:42,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:42,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282056815] [2020-09-25 10:15:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 10:15:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:15:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2799 [2020-09-25 10:15:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:45,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:15:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:15:45,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:15:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:15:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:45,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:45,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:45,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:45,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:15:45,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:45,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:45,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:15:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:45,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:45,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:15:45,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:15:45,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:45,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:15:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:15:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:15:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:15:46,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282056815] [2020-09-25 10:15:46,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:15:46,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:15:46,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584328823] [2020-09-25 10:15:46,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:15:46,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:15:46,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:15:46,223 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 11 states. [2020-09-25 10:15:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:46,650 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-09-25 10:15:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:15:46,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-09-25 10:15:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:46,652 INFO L225 Difference]: With dead ends: 135 [2020-09-25 10:15:46,653 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 10:15:46,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:15:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 10:15:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-09-25 10:15:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 10:15:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-09-25 10:15:46,674 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 49 [2020-09-25 10:15:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:46,674 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-09-25 10:15:46,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:15:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-09-25 10:15:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 10:15:46,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:46,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:46,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:15:46,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:46,684 INFO L82 PathProgramCache]: Analyzing trace with hash 328894853, now seen corresponding path program 3 times [2020-09-25 10:15:46,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:46,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18442668] [2020-09-25 10:15:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:50,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:50,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 10:15:50,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:15:50,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3319 [2020-09-25 10:15:50,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:50,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:50,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:15:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:15:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 10:15:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:50,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:50,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:50,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:15:50,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:50,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:50,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:50,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:50,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:50,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:15:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:50,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:15:50,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 10:15:50,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:50,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:15:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:15:50,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:15:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:15:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:15:50,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18442668] [2020-09-25 10:15:50,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:15:50,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:15:50,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081726246] [2020-09-25 10:15:50,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:15:50,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:15:50,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:15:50,433 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 13 states. [2020-09-25 10:15:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:50,906 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-09-25 10:15:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:15:50,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-25 10:15:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:50,908 INFO L225 Difference]: With dead ends: 141 [2020-09-25 10:15:50,908 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 10:15:50,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:15:50,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 10:15:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-09-25 10:15:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 10:15:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-09-25 10:15:50,919 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 55 [2020-09-25 10:15:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:50,920 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-09-25 10:15:50,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:15:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-09-25 10:15:50,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 10:15:50,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:50,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:50,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:15:50,922 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:50,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:50,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1046055553, now seen corresponding path program 4 times [2020-09-25 10:15:50,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:50,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619987230] [2020-09-25 10:15:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:54,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 10:15:54,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:15:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3883 [2020-09-25 10:15:54,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:54,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:15:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:15:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:15:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:54,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:15:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:54,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:15:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:55,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:15:55,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 10:15:55,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:55,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:15:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:15:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:15:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:15:55,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619987230] [2020-09-25 10:15:55,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:15:55,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:15:55,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993086732] [2020-09-25 10:15:55,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:15:55,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:55,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:15:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:15:55,350 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 15 states. [2020-09-25 10:15:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:55,930 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2020-09-25 10:15:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:15:55,931 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-09-25 10:15:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:55,933 INFO L225 Difference]: With dead ends: 147 [2020-09-25 10:15:55,933 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 10:15:55,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:15:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 10:15:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-09-25 10:15:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 10:15:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-09-25 10:15:55,953 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 61 [2020-09-25 10:15:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:55,953 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-09-25 10:15:55,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:15:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-09-25 10:15:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:15:55,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:55,957 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:55,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:15:55,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:55,958 INFO L82 PathProgramCache]: Analyzing trace with hash 813358717, now seen corresponding path program 5 times [2020-09-25 10:15:55,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:55,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205593586] [2020-09-25 10:15:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:56,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:00,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:00,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:16:00,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:16:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4635 [2020-09-25 10:16:00,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:00,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:16:00,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:16:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:16:00,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:16:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:01,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:16:01,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-25 10:16:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:16:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:16:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:16:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:16:01,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205593586] [2020-09-25 10:16:01,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:01,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:16:01,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712403147] [2020-09-25 10:16:01,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:16:01,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:01,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:16:01,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:16:01,232 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 17 states. [2020-09-25 10:16:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:01,915 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-09-25 10:16:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:16:01,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-09-25 10:16:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:01,918 INFO L225 Difference]: With dead ends: 153 [2020-09-25 10:16:01,918 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 10:16:01,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:16:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 10:16:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-09-25 10:16:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 10:16:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-09-25 10:16:01,927 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 67 [2020-09-25 10:16:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:01,928 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-09-25 10:16:01,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:16:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-09-25 10:16:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:16:01,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:01,929 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:01,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:16:01,930 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:01,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:01,930 INFO L82 PathProgramCache]: Analyzing trace with hash -38517383, now seen corresponding path program 6 times [2020-09-25 10:16:01,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:01,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630055970] [2020-09-25 10:16:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:01,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:05,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:05,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 10:16:05,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:16:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3966 [2020-09-25 10:16:05,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:05,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:16:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:16:05,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:16:05,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:05,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:05,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:16:05,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:05,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:16:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 10:16:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-25 10:16:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:16:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:16:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 10:16:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:16:06,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630055970] [2020-09-25 10:16:06,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:06,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 10:16:06,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977138125] [2020-09-25 10:16:06,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 10:16:06,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:06,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 10:16:06,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:16:06,644 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 19 states. [2020-09-25 10:16:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:07,508 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-09-25 10:16:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 10:16:07,509 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2020-09-25 10:16:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:07,511 INFO L225 Difference]: With dead ends: 159 [2020-09-25 10:16:07,511 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 10:16:07,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=1304, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 10:16:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 10:16:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-09-25 10:16:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 10:16:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-25 10:16:07,520 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 73 [2020-09-25 10:16:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:07,520 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-25 10:16:07,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 10:16:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-25 10:16:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:16:07,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:07,522 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:07,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:16:07,522 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:07,523 INFO L82 PathProgramCache]: Analyzing trace with hash 174817141, now seen corresponding path program 7 times [2020-09-25 10:16:07,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:07,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086914275] [2020-09-25 10:16:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:12,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:12,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:16:12,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:16:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:16:12,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:12,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:16:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:16:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 10:16:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:12,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:12,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:12,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:16:12,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:12,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:12,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:16:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:16:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 10:16:13,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:13,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:16:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:16:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:16:13,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:16:13,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086914275] [2020-09-25 10:16:13,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:13,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:16:13,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789018640] [2020-09-25 10:16:13,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:16:13,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:13,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:16:13,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:16:13,540 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 21 states. [2020-09-25 10:16:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:14,567 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2020-09-25 10:16:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:16:14,568 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 79 [2020-09-25 10:16:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:14,569 INFO L225 Difference]: With dead ends: 165 [2020-09-25 10:16:14,569 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 10:16:14,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=530, Invalid=1632, Unknown=0, NotChecked=0, Total=2162 [2020-09-25 10:16:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 10:16:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2020-09-25 10:16:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 10:16:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-25 10:16:14,592 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 79 [2020-09-25 10:16:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:14,592 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-25 10:16:14,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:16:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-25 10:16:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 10:16:14,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:14,594 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:14,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:16:14,594 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:14,597 INFO L82 PathProgramCache]: Analyzing trace with hash -944354191, now seen corresponding path program 8 times [2020-09-25 10:16:14,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:14,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030897606] [2020-09-25 10:16:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:19,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:19,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 10:16:19,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:16:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:16:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:19,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:16:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:16:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 10:16:19,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:19,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:19,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:16:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:20,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:16:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:20,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-09-25 10:16:20,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:20,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:16:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:16:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:16:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:16:20,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030897606] [2020-09-25 10:16:20,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:20,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 10:16:20,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217184479] [2020-09-25 10:16:20,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 10:16:20,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:20,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 10:16:20,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:16:20,692 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 23 states. [2020-09-25 10:16:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:21,927 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2020-09-25 10:16:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 10:16:21,928 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 85 [2020-09-25 10:16:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:21,930 INFO L225 Difference]: With dead ends: 171 [2020-09-25 10:16:21,930 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 10:16:21,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=1996, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 10:16:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 10:16:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-09-25 10:16:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 10:16:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-09-25 10:16:21,943 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 85 [2020-09-25 10:16:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:21,944 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-09-25 10:16:21,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 10:16:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-09-25 10:16:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 10:16:21,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:21,946 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:16:21,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:16:21,947 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:21,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1868196973, now seen corresponding path program 9 times [2020-09-25 10:16:21,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:21,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986814206] [2020-09-25 10:16:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 10:16:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:16:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:16:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:26,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:16:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:16:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:16:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:27,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:27,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:27,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:27,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:16:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:27,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:16:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:27,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 10:16:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-09-25 10:16:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:27,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:16:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:16:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:16:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1