/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=WIDEST --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 03:25:35,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:25:35,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:25:35,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:25:35,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:25:35,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:25:35,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:25:35,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:25:35,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:25:35,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:25:35,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:25:35,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:25:35,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:25:35,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:25:35,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:25:35,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:25:35,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:25:35,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:25:35,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:25:35,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:25:35,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:25:35,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:25:35,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:25:35,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:25:35,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:25:35,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:25:35,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:25:35,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:25:35,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:25:35,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:25:35,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:25:35,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:25:35,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:25:35,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:25:35,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:25:35,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:25:35,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:25:35,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:25:35,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:25:35,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:25:35,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:25:35,671 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 03:25:35,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:25:35,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:25:35,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:25:35,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:25:35,724 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:25:35,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:25:35,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:25:35,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:25:35,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:25:35,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:25:35,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:25:35,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:25:35,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:25:35,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:25:35,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:25:35,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:25:35,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:25:35,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:25:35,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:25:35,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:25:35,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:25:35,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:25:35,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:25:35,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:25:35,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:25:35,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:25:35,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:25:35,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:25:35,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:25:35,731 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:25:36,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:25:36,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:25:36,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:25:36,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:25:36,241 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:25:36,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 03:25:36,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb45970c4/4976a8a016ad4b05b36df134fa614ad1/FLAGf4a749e01 [2020-09-25 03:25:36,859 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:25:36,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 03:25:36,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb45970c4/4976a8a016ad4b05b36df134fa614ad1/FLAGf4a749e01 [2020-09-25 03:25:37,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb45970c4/4976a8a016ad4b05b36df134fa614ad1 [2020-09-25 03:25:37,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:25:37,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:25:37,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:25:37,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:25:37,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:25:37,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46088d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37, skipping insertion in model container [2020-09-25 03:25:37,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:25:37,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:25:37,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:25:37,565 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:25:37,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:25:37,606 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:25:37,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37 WrapperNode [2020-09-25 03:25:37,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:25:37,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:25:37,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:25:37,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:25:37,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (1/1) ... [2020-09-25 03:25:37,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:25:37,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:25:37,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:25:37,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:25:37,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (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 03:25:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:25:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:25:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:25:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 03:25:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:25:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:25:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:25:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:25:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 03:25:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:25:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:25:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:25:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:25:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:25:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:25:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:25:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:25:38,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:25:38,121 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:25:38,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:25:38 BoogieIcfgContainer [2020-09-25 03:25:38,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:25:38,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:25:38,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:25:38,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:25:38,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:25:37" (1/3) ... [2020-09-25 03:25:38,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfee878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:25:38, skipping insertion in model container [2020-09-25 03:25:38,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:37" (2/3) ... [2020-09-25 03:25:38,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfee878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:25:38, skipping insertion in model container [2020-09-25 03:25:38,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:25:38" (3/3) ... [2020-09-25 03:25:38,138 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 03:25:38,153 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:25:38,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:25:38,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:25:38,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:25:38,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:25:38,226 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:25:38,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:25:38,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:25:38,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:25:38,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:25:38,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:25:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 03:25:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 03:25:38,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:38,264 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 03:25:38,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 03:25:38,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:38,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610653047] [2020-09-25 03:25:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:38,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:25:38,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:25:38,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 03:25:38,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:25:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 03:25:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 03:25:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:25:38,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:25:38,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:25:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:38,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:38,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:25:38,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:25:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:25:38,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:25:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:38,997 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 03:25:38,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610653047] [2020-09-25 03:25:39,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:25:39,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:25:39,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678177453] [2020-09-25 03:25:39,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:25:39,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:39,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:25:39,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:25:39,034 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-09-25 03:25:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:39,329 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-09-25 03:25:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:25:39,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 03:25:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:39,349 INFO L225 Difference]: With dead ends: 109 [2020-09-25 03:25:39,350 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 03:25:39,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 03:25:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 03:25:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 03:25:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:25:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 03:25:39,424 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 03:25:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:39,425 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 03:25:39,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:25:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 03:25:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:25:39,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:39,428 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 03:25:39,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:25:39,429 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:39,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:39,430 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 03:25:39,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:39,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166719865] [2020-09-25 03:25:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:41,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:41,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:25:41,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2049 [2020-09-25 03:25:41,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:25:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 03:25:41,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:25:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:25:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:41,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:25:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:25:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:25:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:41,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:41,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:25:41,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:25:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:25:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:25:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:25:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:25:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:41,884 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 03:25:41,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166719865] [2020-09-25 03:25:41,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:41,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 03:25:41,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104638613] [2020-09-25 03:25:41,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:25:41,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:25:41,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:25:41,893 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 14 states. [2020-09-25 03:25:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:42,879 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2020-09-25 03:25:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:25:42,880 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-09-25 03:25:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:42,883 INFO L225 Difference]: With dead ends: 128 [2020-09-25 03:25:42,885 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 03:25:42,887 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 03:25:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 03:25:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2020-09-25 03:25:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 03:25:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-09-25 03:25:42,915 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 36 [2020-09-25 03:25:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:42,916 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-09-25 03:25:42,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:25:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-09-25 03:25:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 03:25:42,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:42,920 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 03:25:42,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:25:42,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:42,921 INFO L82 PathProgramCache]: Analyzing trace with hash -253984627, now seen corresponding path program 1 times [2020-09-25 03:25:42,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:42,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358604917] [2020-09-25 03:25:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:42,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:25:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1567 [2020-09-25 03:25:44,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:25:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:25:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:25:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:44,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:44,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:25:44,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:44,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:44,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:25:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:44,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 03:25:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 03:25:44,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:25:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:25:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:25:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:44,785 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 03:25:44,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358604917] [2020-09-25 03:25:44,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:44,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:25:44,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280789324] [2020-09-25 03:25:44,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:25:44,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:44,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:25:44,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:25:44,789 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 9 states. [2020-09-25 03:25:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:45,115 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2020-09-25 03:25:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:25:45,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 03:25:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:45,117 INFO L225 Difference]: With dead ends: 129 [2020-09-25 03:25:45,117 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 03:25:45,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:25:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 03:25:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-09-25 03:25:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 03:25:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 03:25:45,129 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 43 [2020-09-25 03:25:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:45,130 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 03:25:45,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:25:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 03:25:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 03:25:45,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:45,132 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 03:25:45,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:25:45,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash 825760649, now seen corresponding path program 2 times [2020-09-25 03:25:45,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:45,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443364520] [2020-09-25 03:25:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:47,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 03:25:47,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-09-25 03:25:47,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:25:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:25:47,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:25:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:47,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:47,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:47,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:25:47,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:25:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:48,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:25:48,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 03:25:48,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:48,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:25:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:25:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 03:25:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:48,228 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 03:25:48,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443364520] [2020-09-25 03:25:48,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:48,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:25:48,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492655248] [2020-09-25 03:25:48,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:25:48,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:48,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:25:48,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:25:48,232 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 11 states. [2020-09-25 03:25:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:48,590 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-09-25 03:25:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:25:48,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-09-25 03:25:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:48,592 INFO L225 Difference]: With dead ends: 135 [2020-09-25 03:25:48,592 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 03:25:48,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:25:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 03:25:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-09-25 03:25:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 03:25:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-09-25 03:25:48,606 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 49 [2020-09-25 03:25:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:48,606 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-09-25 03:25:48,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:25:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-09-25 03:25:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 03:25:48,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:48,608 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 03:25:48,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:25:48,609 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:48,609 INFO L82 PathProgramCache]: Analyzing trace with hash 328894853, now seen corresponding path program 3 times [2020-09-25 03:25:48,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:48,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466278841] [2020-09-25 03:25:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:52,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 03:25:52,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3400 [2020-09-25 03:25:52,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:25:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:25:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 03:25:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:25:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:25:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:52,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:25:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:52,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 03:25:52,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:25:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:25:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:25:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:25:52,404 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 03:25:52,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466278841] [2020-09-25 03:25:52,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:52,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:25:52,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588328630] [2020-09-25 03:25:52,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:25:52,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:52,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:25:52,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:25:52,407 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 13 states. [2020-09-25 03:25:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:52,963 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-09-25 03:25:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:25:52,964 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-25 03:25:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:52,965 INFO L225 Difference]: With dead ends: 141 [2020-09-25 03:25:52,965 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 03:25:52,969 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 03:25:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 03:25:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-09-25 03:25:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 03:25:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-09-25 03:25:52,985 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 55 [2020-09-25 03:25:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:52,985 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-09-25 03:25:52,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:25:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-09-25 03:25:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 03:25:52,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:52,992 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 03:25:52,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:25:52,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:52,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1046055553, now seen corresponding path program 4 times [2020-09-25 03:25:52,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:52,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879832359] [2020-09-25 03:25:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 03:25:57,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4177 [2020-09-25 03:25:57,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:25:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:25:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:25:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:25:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:25:57,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:57,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:25:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 03:25:57,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 03:25:57,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:57,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:25:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:25:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:25:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:57,853 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 03:25:57,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879832359] [2020-09-25 03:25:57,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:57,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:25:57,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014191332] [2020-09-25 03:25:57,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:25:57,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:57,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:25:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:25:57,860 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 15 states. [2020-09-25 03:25:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:58,512 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2020-09-25 03:25:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:25:58,512 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-09-25 03:25:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:58,517 INFO L225 Difference]: With dead ends: 147 [2020-09-25 03:25:58,517 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 03:25:58,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-25 03:25:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 03:25:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-09-25 03:25:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 03:25:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-09-25 03:25:58,535 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 61 [2020-09-25 03:25:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:58,537 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-09-25 03:25:58,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:25:58,537 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-09-25 03:25:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 03:25:58,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:58,539 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 03:25:58,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:25:58,540 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:58,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:58,541 INFO L82 PathProgramCache]: Analyzing trace with hash 813358717, now seen corresponding path program 5 times [2020-09-25 03:25:58,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:58,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705060487] [2020-09-25 03:25:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:26:03,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:26:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:26:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:26:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 03:26:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:03,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:26:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:26:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:04,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:26:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 03:26:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:26:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:26:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:26:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:04,234 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 03:26:04,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705060487] [2020-09-25 03:26:04,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:04,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:26:04,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165921798] [2020-09-25 03:26:04,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:26:04,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:04,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:26:04,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:26:04,237 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 17 states. [2020-09-25 03:26:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:04,838 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-09-25 03:26:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 03:26:04,838 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-09-25 03:26:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:04,840 INFO L225 Difference]: With dead ends: 153 [2020-09-25 03:26:04,840 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 03:26:04,844 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 03:26:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 03:26:04,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-09-25 03:26:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 03:26:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-09-25 03:26:04,860 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 67 [2020-09-25 03:26:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:04,861 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-09-25 03:26:04,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:26:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-09-25 03:26:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 03:26:04,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:04,867 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 03:26:04,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:26:04,868 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -38517383, now seen corresponding path program 6 times [2020-09-25 03:26:04,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:04,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854652080] [2020-09-25 03:26:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:09,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:09,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 03:26:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4594 [2020-09-25 03:26:09,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:09,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:26:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:26:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:26:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:09,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:09,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:26:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:10,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:10,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:26:10,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-25 03:26:10,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:26:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:26:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:26:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:10,283 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 03:26:10,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854652080] [2020-09-25 03:26:10,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:10,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 03:26:10,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449108991] [2020-09-25 03:26:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 03:26:10,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 03:26:10,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:26:10,287 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 19 states. [2020-09-25 03:26:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:10,991 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-09-25 03:26:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 03:26:10,992 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2020-09-25 03:26:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:10,993 INFO L225 Difference]: With dead ends: 159 [2020-09-25 03:26:10,994 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 03:26:10,998 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 03:26:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 03:26:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-09-25 03:26:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 03:26:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-25 03:26:11,014 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 73 [2020-09-25 03:26:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:11,014 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-25 03:26:11,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 03:26:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-25 03:26:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 03:26:11,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:11,015 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 03:26:11,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:26:11,016 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:11,016 INFO L82 PathProgramCache]: Analyzing trace with hash 174817141, now seen corresponding path program 7 times [2020-09-25 03:26:11,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:11,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046852157] [2020-09-25 03:26:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:16,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:26:16,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:16,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 03:26:16,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:16,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:26:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:26:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:26:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:16,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:16,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:26:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:16,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:16,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:26:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 03:26:16,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:26:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:26:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:26:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:17,427 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 03:26:17,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046852157] [2020-09-25 03:26:17,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:17,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 03:26:17,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622324542] [2020-09-25 03:26:17,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 03:26:17,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:17,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 03:26:17,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:26:17,430 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 21 states. [2020-09-25 03:26:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:26:18,386 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2020-09-25 03:26:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 03:26:18,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 79 [2020-09-25 03:26:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:26:18,389 INFO L225 Difference]: With dead ends: 165 [2020-09-25 03:26:18,390 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 03:26:18,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=413, Invalid=1069, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 03:26:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 03:26:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2020-09-25 03:26:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 03:26:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-25 03:26:18,397 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 79 [2020-09-25 03:26:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:26:18,398 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-25 03:26:18,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 03:26:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-25 03:26:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 03:26:18,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:26:18,399 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 03:26:18,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:26:18,399 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:26:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:26:18,400 INFO L82 PathProgramCache]: Analyzing trace with hash -944354191, now seen corresponding path program 8 times [2020-09-25 03:26:18,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:26:18,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289787566] [2020-09-25 03:26:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:26:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 03:26:23,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:26:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 03:26:23,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:26:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:26:23,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:26:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:26:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:26:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:23,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:23,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:23,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:26:23,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:26:23,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:26:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:26:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:26:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:26:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:26:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:26:24,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:26:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 03:26:24,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:26:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-09-25 03:26:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:26:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:26:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:26:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:26:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:26:24,576 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 03:26:24,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289787566] [2020-09-25 03:26:24,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:26:24,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 03:26:24,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342766597] [2020-09-25 03:26:24,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 03:26:24,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:26:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 03:26:24,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:26:24,579 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 23 states.