/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:38:16,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:38:16,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:38:16,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:38:16,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:38:16,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:38:16,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:38:16,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:38:16,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:38:16,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:38:16,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:38:16,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:38:16,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:38:16,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:38:16,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:38:16,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:38:16,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:38:16,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:38:16,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:38:16,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:38:16,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:38:16,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:38:16,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:38:16,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:38:16,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:38:16,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:38:16,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:38:16,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:38:16,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:38:16,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:38:16,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:38:16,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:38:16,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:38:16,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:38:16,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:38:16,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:38:16,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:38:16,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:38:16,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:38:16,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:38:16,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:38:16,813 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 [2020-10-12 14:38:16,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:38:16,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:38:16,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:38:16,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:38:16,861 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:38:16,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:38:16,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:38:16,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:38:16,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:38:16,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:38:16,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:38:16,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:38:16,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:38:16,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:38:16,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:38:16,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:38:16,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:38:16,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:38:16,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:38:16,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:38:16,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:38:16,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:38:16,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:38:16,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:38:16,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:38:16,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:38:16,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:38:16,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:38:16,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:38:16,866 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:38:17,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:38:17,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:38:17,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:38:17,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:38:17,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:38:17,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08.c [2020-10-12 14:38:17,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64072fefb/15760edbb47f49b5a90995df38cf4aab/FLAGb37b81a98 [2020-10-12 14:38:17,995 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:38:17,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label08.c [2020-10-12 14:38:18,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64072fefb/15760edbb47f49b5a90995df38cf4aab/FLAGb37b81a98 [2020-10-12 14:38:18,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64072fefb/15760edbb47f49b5a90995df38cf4aab [2020-10-12 14:38:18,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:38:18,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:38:18,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:38:18,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:38:18,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:38:18,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:38:18" (1/1) ... [2020-10-12 14:38:18,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:18, skipping insertion in model container [2020-10-12 14:38:18,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:38:18" (1/1) ... [2020-10-12 14:38:18,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:38:18,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:38:19,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:38:19,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:38:19,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:38:19,878 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:38:19,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19 WrapperNode [2020-10-12 14:38:19,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:38:19,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:38:19,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:38:19,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:38:19,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:19,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:19,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:19,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:20,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:20,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:20,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (1/1) ... [2020-10-12 14:38:20,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:38:20,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:38:20,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:38:20,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:38:20,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (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 [2020-10-12 14:38:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:38:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:38:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:38:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:38:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:38:20,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:38:20,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:38:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:38:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:38:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:38:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:38:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:38:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:38:29,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:38:29,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:38:29,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:38:29 BoogieIcfgContainer [2020-10-12 14:38:29,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:38:29,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:38:29,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:38:29,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:38:29,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:38:18" (1/3) ... [2020-10-12 14:38:29,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f206d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:38:29, skipping insertion in model container [2020-10-12 14:38:29,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:19" (2/3) ... [2020-10-12 14:38:29,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f206d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:38:29, skipping insertion in model container [2020-10-12 14:38:29,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:38:29" (3/3) ... [2020-10-12 14:38:29,482 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2020-10-12 14:38:29,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:38:29,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:38:29,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:38:29,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:38:29,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:38:29,553 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:38:29,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:38:29,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:38:29,553 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:38:29,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:38:29,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:38:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:38:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 14:38:29,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:29,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:29,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:29,615 INFO L82 PathProgramCache]: Analyzing trace with hash 768674241, now seen corresponding path program 1 times [2020-10-12 14:38:29,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:29,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737169136] [2020-10-12 14:38:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:29,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:30,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:30,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:38:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-12 14:38:30,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:38:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:38:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:38:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:30,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:30,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:38:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:38:30,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737169136] [2020-10-12 14:38:30,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:38:30,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:38:30,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624241060] [2020-10-12 14:38:30,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:38:30,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:30,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:38:30,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:38:30,531 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-12 14:38:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:38:42,160 INFO L93 Difference]: Finished difference Result 2169 states and 4016 transitions. [2020-10-12 14:38:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:38:42,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 14:38:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:38:42,211 INFO L225 Difference]: With dead ends: 2169 [2020-10-12 14:38:42,211 INFO L226 Difference]: Without dead ends: 1472 [2020-10-12 14:38:42,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:38:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-12 14:38:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1443. [2020-10-12 14:38:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-12 14:38:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2111 transitions. [2020-10-12 14:38:42,395 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2111 transitions. Word has length 64 [2020-10-12 14:38:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:38:42,396 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2111 transitions. [2020-10-12 14:38:42,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:38:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2111 transitions. [2020-10-12 14:38:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 14:38:42,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:42,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:38:42,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:38:42,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:42,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2037407892, now seen corresponding path program 1 times [2020-10-12 14:38:42,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:42,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253265618] [2020-10-12 14:38:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:45,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:38:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:38:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2681 [2020-10-12 14:38:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:38:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 14:38:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:38:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:45,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:45,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:45,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:45,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:38:45,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:45,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:45,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:38:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:45,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:38:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:38:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-12 14:38:45,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:38:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:38:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:38:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 14:38:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:38:45,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253265618] [2020-10-12 14:38:45,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:38:45,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:38:45,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3138580] [2020-10-12 14:38:45,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:38:45,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:45,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:38:45,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:38:45,739 INFO L87 Difference]: Start difference. First operand 1443 states and 2111 transitions. Second operand 6 states. [2020-10-12 14:39:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:00,739 INFO L93 Difference]: Finished difference Result 3808 states and 5668 transitions. [2020-10-12 14:39:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:39:00,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-12 14:39:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:00,755 INFO L225 Difference]: With dead ends: 3808 [2020-10-12 14:39:00,756 INFO L226 Difference]: Without dead ends: 2371 [2020-10-12 14:39:00,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:39:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-10-12 14:39:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1930. [2020-10-12 14:39:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-12 14:39:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2594 transitions. [2020-10-12 14:39:00,833 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2594 transitions. Word has length 135 [2020-10-12 14:39:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:00,836 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2594 transitions. [2020-10-12 14:39:00,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:39:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2594 transitions. [2020-10-12 14:39:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 14:39:00,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:00,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:39:00,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:39:00,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:00,849 INFO L82 PathProgramCache]: Analyzing trace with hash -149082696, now seen corresponding path program 1 times [2020-10-12 14:39:00,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577347498] [2020-10-12 14:39:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:05,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:39:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:39:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-12 14:39:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 14:39:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:39:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 14:39:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:06,486 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-12 14:39:06,657 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-12 14:39:06,820 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-12 14:39:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:07,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:07,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:07,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:39:07,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:07,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:07,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:39:07,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 14:39:07,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:39:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:07,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577347498] [2020-10-12 14:39:07,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:07,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 14:39:07,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201266322] [2020-10-12 14:39:07,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 14:39:07,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:07,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 14:39:07,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:39:07,478 INFO L87 Difference]: Start difference. First operand 1930 states and 2594 transitions. Second operand 20 states. [2020-10-12 14:39:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:25,705 INFO L93 Difference]: Finished difference Result 4252 states and 5670 transitions. [2020-10-12 14:39:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 14:39:25,711 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 138 [2020-10-12 14:39:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:25,724 INFO L225 Difference]: With dead ends: 4252 [2020-10-12 14:39:25,725 INFO L226 Difference]: Without dead ends: 1939 [2020-10-12 14:39:25,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:39:25,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-10-12 14:39:25,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1930. [2020-10-12 14:39:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-12 14:39:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2450 transitions. [2020-10-12 14:39:25,781 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2450 transitions. Word has length 138 [2020-10-12 14:39:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:25,781 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2450 transitions. [2020-10-12 14:39:25,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 14:39:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2450 transitions. [2020-10-12 14:39:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 14:39:25,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:25,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-10-12 14:39:25,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:39:25,784 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:25,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1773068340, now seen corresponding path program 1 times [2020-10-12 14:39:25,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:25,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94724237] [2020-10-12 14:39:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:26,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 14:39:26,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:26,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 14:39:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:39:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 14:39:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:26,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:26,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:26,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:39:26,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:26,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:26,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:26,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:39:26,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:26,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:39:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:26,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94724237] [2020-10-12 14:39:26,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:26,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:39:26,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116078676] [2020-10-12 14:39:26,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:39:26,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:26,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:39:26,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:39:26,330 INFO L87 Difference]: Start difference. First operand 1930 states and 2450 transitions. Second operand 5 states. [2020-10-12 14:39:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:36,248 INFO L93 Difference]: Finished difference Result 5636 states and 7219 transitions. [2020-10-12 14:39:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:39:36,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 14:39:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:36,274 INFO L225 Difference]: With dead ends: 5636 [2020-10-12 14:39:36,275 INFO L226 Difference]: Without dead ends: 3712 [2020-10-12 14:39:36,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:39:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2020-10-12 14:39:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3705. [2020-10-12 14:39:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3705 states. [2020-10-12 14:39:36,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 4721 transitions. [2020-10-12 14:39:36,391 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 4721 transitions. Word has length 151 [2020-10-12 14:39:36,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:36,393 INFO L479 AbstractCegarLoop]: Abstraction has 3705 states and 4721 transitions. [2020-10-12 14:39:36,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:39:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 4721 transitions. [2020-10-12 14:39:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-12 14:39:36,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:36,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:39:36,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:39:36,397 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:36,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1831825663, now seen corresponding path program 1 times [2020-10-12 14:39:36,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:36,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069169847] [2020-10-12 14:39:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-12 14:39:38,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:39:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1897 [2020-10-12 14:39:38,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:39:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-12 14:39:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 14:39:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:39:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:38,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:39:38,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:38,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:39:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:39:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 14:39:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:39:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-12 14:39:39,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069169847] [2020-10-12 14:39:39,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:39,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:39:39,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906574164] [2020-10-12 14:39:39,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:39:39,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:39,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:39:39,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:39:39,054 INFO L87 Difference]: Start difference. First operand 3705 states and 4721 transitions. Second operand 8 states. [2020-10-12 14:39:43,810 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 14:39:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:55,107 INFO L93 Difference]: Finished difference Result 7474 states and 9533 transitions. [2020-10-12 14:39:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:39:55,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-12 14:39:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:55,128 INFO L225 Difference]: With dead ends: 7474 [2020-10-12 14:39:55,128 INFO L226 Difference]: Without dead ends: 3712 [2020-10-12 14:39:55,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:39:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2020-10-12 14:39:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3705. [2020-10-12 14:39:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3705 states. [2020-10-12 14:39:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 4705 transitions. [2020-10-12 14:39:55,245 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 4705 transitions. Word has length 222 [2020-10-12 14:39:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:55,246 INFO L479 AbstractCegarLoop]: Abstraction has 3705 states and 4705 transitions. [2020-10-12 14:39:55,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:39:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 4705 transitions. [2020-10-12 14:39:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-12 14:39:55,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:55,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:39:55,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:39:55,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:55,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1035615609, now seen corresponding path program 1 times [2020-10-12 14:39:55,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:55,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715862217] [2020-10-12 14:39:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:55,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:59,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:59,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:39:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:39:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4131 [2020-10-12 14:39:59,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:39:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:39:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 14:39:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:59,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:39:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:39:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:59,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:59,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:59,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:59,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 14:39:59,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:39:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:39:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:39:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:00,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:40:00,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 14:40:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:40:00,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:40:00,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715862217] [2020-10-12 14:40:00,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:00,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:40:00,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531903231] [2020-10-12 14:40:00,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:40:00,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:00,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:40:00,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:40:00,175 INFO L87 Difference]: Start difference. First operand 3705 states and 4705 transitions. Second operand 10 states. [2020-10-12 14:40:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:18,873 INFO L93 Difference]: Finished difference Result 9301 states and 12322 transitions. [2020-10-12 14:40:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 14:40:18,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 226 [2020-10-12 14:40:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:18,906 INFO L225 Difference]: With dead ends: 9301 [2020-10-12 14:40:18,906 INFO L226 Difference]: Without dead ends: 5602 [2020-10-12 14:40:18,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-12 14:40:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2020-10-12 14:40:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 5548. [2020-10-12 14:40:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2020-10-12 14:40:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 6861 transitions. [2020-10-12 14:40:19,060 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 6861 transitions. Word has length 226 [2020-10-12 14:40:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:19,061 INFO L479 AbstractCegarLoop]: Abstraction has 5548 states and 6861 transitions. [2020-10-12 14:40:19,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:40:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 6861 transitions. [2020-10-12 14:40:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-12 14:40:19,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:19,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:19,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:40:19,067 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1041943371, now seen corresponding path program 1 times [2020-10-12 14:40:19,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:19,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193119699] [2020-10-12 14:40:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:21,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:21,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:40:21,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:40:21,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2393 [2020-10-12 14:40:21,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:40:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:40:21,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-12 14:40:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:21,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:21,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:40:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:40:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:21,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:21,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:21,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 14:40:21,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:40:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:40:21,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:21,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:22,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:22,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:40:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 14:40:22,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:40:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 14:40:22,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193119699] [2020-10-12 14:40:22,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:22,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:40:22,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620915314] [2020-10-12 14:40:22,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:40:22,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:40:22,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:40:22,300 INFO L87 Difference]: Start difference. First operand 5548 states and 6861 transitions. Second operand 8 states. [2020-10-12 14:40:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:43,278 INFO L93 Difference]: Finished difference Result 12660 states and 16944 transitions. [2020-10-12 14:40:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:40:43,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-10-12 14:40:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:43,321 INFO L225 Difference]: With dead ends: 12660 [2020-10-12 14:40:43,321 INFO L226 Difference]: Without dead ends: 7553 [2020-10-12 14:40:43,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:40:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2020-10-12 14:40:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 6520. [2020-10-12 14:40:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6520 states. [2020-10-12 14:40:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 8148 transitions. [2020-10-12 14:40:43,558 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 8148 transitions. Word has length 228 [2020-10-12 14:40:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:43,559 INFO L479 AbstractCegarLoop]: Abstraction has 6520 states and 8148 transitions. [2020-10-12 14:40:43,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:40:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 8148 transitions. [2020-10-12 14:40:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 14:40:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:43,567 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:43,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:40:43,568 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash 823052026, now seen corresponding path program 1 times [2020-10-12 14:40:43,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:43,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88530986] [2020-10-12 14:40:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:43,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:46,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:46,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 14:40:46,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:40:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3177 [2020-10-12 14:40:46,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 14:40:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 14:40:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 14:40:46,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:47,251 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-12 14:40:47,455 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-12 14:40:47,657 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-12 14:40:47,867 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-12 14:40:48,083 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-10-12 14:40:48,230 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2020-10-12 14:40:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:48,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:48,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:48,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:40:48,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:48,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:48,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 14:40:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:48,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 14:40:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 14:40:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:40:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 14:40:48,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88530986] [2020-10-12 14:40:48,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:48,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:40:48,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790434684] [2020-10-12 14:40:48,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 14:40:48,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:48,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 14:40:48,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:40:48,701 INFO L87 Difference]: Start difference. First operand 6520 states and 8148 transitions. Second operand 11 states. [2020-10-12 14:40:52,173 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 14:40:52,437 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-12 14:40:53,152 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-12 14:40:53,588 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-12 14:40:54,038 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-12 14:40:54,240 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-12 14:41:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:11,267 INFO L93 Difference]: Finished difference Result 12722 states and 16037 transitions. [2020-10-12 14:41:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:41:11,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 254 [2020-10-12 14:41:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:11,303 INFO L225 Difference]: With dead ends: 12722 [2020-10-12 14:41:11,304 INFO L226 Difference]: Without dead ends: 6537 [2020-10-12 14:41:11,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-12 14:41:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6537 states. [2020-10-12 14:41:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6537 to 6520. [2020-10-12 14:41:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6520 states. [2020-10-12 14:41:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 8138 transitions. [2020-10-12 14:41:11,453 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 8138 transitions. Word has length 254 [2020-10-12 14:41:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:11,454 INFO L479 AbstractCegarLoop]: Abstraction has 6520 states and 8138 transitions. [2020-10-12 14:41:11,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 14:41:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 8138 transitions. [2020-10-12 14:41:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-12 14:41:11,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:11,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:11,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:41:11,462 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1682568432, now seen corresponding path program 1 times [2020-10-12 14:41:11,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:11,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882440934] [2020-10-12 14:41:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 14:41:16,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:41:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 14:41:16,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-10-12 14:41:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 14:41:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:16,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:16,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:41:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:16,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:16,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:41:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:16,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:16,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:16,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:41:16,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 14:41:16,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:16,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:16,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-12 14:41:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:17,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:17,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:41:17,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:17,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 14:41:17,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:17,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:17,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:41:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-12 14:41:17,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882440934] [2020-10-12 14:41:17,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:17,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:41:17,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877356869] [2020-10-12 14:41:17,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:41:17,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:17,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:41:17,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:41:17,300 INFO L87 Difference]: Start difference. First operand 6520 states and 8138 transitions. Second operand 5 states. [2020-10-12 14:41:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:36,673 INFO L93 Difference]: Finished difference Result 14353 states and 18636 transitions. [2020-10-12 14:41:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:41:36,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-12 14:41:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:36,714 INFO L225 Difference]: With dead ends: 14353 [2020-10-12 14:41:36,714 INFO L226 Difference]: Without dead ends: 8284 [2020-10-12 14:41:36,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:41:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2020-10-12 14:41:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 7842. [2020-10-12 14:41:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7842 states. [2020-10-12 14:41:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 9740 transitions. [2020-10-12 14:41:36,947 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 9740 transitions. Word has length 303 [2020-10-12 14:41:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:36,948 INFO L479 AbstractCegarLoop]: Abstraction has 7842 states and 9740 transitions. [2020-10-12 14:41:36,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:41:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 9740 transitions. [2020-10-12 14:41:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 14:41:36,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:36,959 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:36,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:41:36,960 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1430585688, now seen corresponding path program 1 times [2020-10-12 14:41:36,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:36,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329369448] [2020-10-12 14:41:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:42,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:42,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 14:41:42,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:41:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 14:41:42,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 14:41:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:41:42,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-12 14:41:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:42,509 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2020-10-12 14:41:42,820 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2020-10-12 14:41:42,984 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 20 [2020-10-12 14:41:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:43,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:41:43,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:41:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:43,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:43,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:43,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 14:41:43,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:41:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:41:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:43,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:43,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:41:43,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 14:41:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:41:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-12 14:41:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:43,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:43,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:41:43,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 14:41:43,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:41:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:43,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:41:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 15 proven. 170 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-12 14:41:43,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329369448] [2020-10-12 14:41:43,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:43,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 14:41:43,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884829074] [2020-10-12 14:41:43,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:41:43,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:43,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:41:43,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:41:43,954 INFO L87 Difference]: Start difference. First operand 7842 states and 9740 transitions. Second operand 13 states. [2020-10-12 14:41:58,292 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-12 14:41:58,785 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-12 14:42:00,977 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48