/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:24:44,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:24:44,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:24:44,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:24:44,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:24:44,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:24:44,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:24:44,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:24:44,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:24:44,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:24:44,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:24:44,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:24:44,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:24:44,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:24:44,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:24:44,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:24:44,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:24:44,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:24:44,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:24:44,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:24:44,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:24:44,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:24:44,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:24:44,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:24:44,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:24:44,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:24:44,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:24:44,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:24:44,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:24:44,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:24:44,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:24:44,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:24:44,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:24:44,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:24:44,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:24:44,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:24:44,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:24:44,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:24:44,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:24:44,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:24:44,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:24:44,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:24:44,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:24:44,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:24:44,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:24:44,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:24:44,807 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:24:44,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:24:44,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:24:44,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:24:44,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:24:44,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:24:44,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:24:44,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:24:44,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:24:44,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:24:44,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:24:44,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:24:44,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:24:44,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:24:44,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:24:44,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:24:44,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:24:44,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:24:44,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:24:44,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:24:44,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:24:44,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:24:44,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:24:44,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:24:44,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:24:44,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:24:45,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:24:45,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:24:45,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:24:45,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:24:45,318 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:24:45,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-25 13:24:45,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/923acf2ee/b0ef6996f6ce40b78aa03f624a61a8a8/FLAG47a9c5c14 [2020-09-25 13:24:45,992 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:24:45,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-25 13:24:46,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/923acf2ee/b0ef6996f6ce40b78aa03f624a61a8a8/FLAG47a9c5c14 [2020-09-25 13:24:46,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/923acf2ee/b0ef6996f6ce40b78aa03f624a61a8a8 [2020-09-25 13:24:46,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:24:46,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:24:46,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:24:46,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:24:46,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:24:46,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2627f451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46, skipping insertion in model container [2020-09-25 13:24:46,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:24:46,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:24:46,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:24:46,636 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:24:46,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:24:46,667 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:24:46,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46 WrapperNode [2020-09-25 13:24:46,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:24:46,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:24:46,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:24:46,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:24:46,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... [2020-09-25 13:24:46,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:24:46,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:24:46,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:24:46,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:24:46,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:24:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:24:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:24:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 13:24:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:24:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 13:24:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:24:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 13:24:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:24:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:24:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:24:47,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:24:47,045 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:24:47,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:24:47 BoogieIcfgContainer [2020-09-25 13:24:47,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:24:47,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:24:47,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:24:47,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:24:47,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:24:46" (1/3) ... [2020-09-25 13:24:47,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fadffa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:24:47, skipping insertion in model container [2020-09-25 13:24:47,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:24:46" (2/3) ... [2020-09-25 13:24:47,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fadffa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:24:47, skipping insertion in model container [2020-09-25 13:24:47,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:24:47" (3/3) ... [2020-09-25 13:24:47,060 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-25 13:24:47,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:24:47,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:24:47,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:24:47,138 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:24:47,138 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:24:47,138 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:24:47,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:24:47,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:24:47,139 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:24:47,139 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:24:47,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:24:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 13:24:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:24:47,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:47,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:47,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:47,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:47,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 13:24:47,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:47,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670799669] [2020-09-25 13:24:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:47,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:47,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:24:47,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 13:24:47,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:47,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:24:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:24:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:24:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:47,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:47,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:24:47,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:47,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:47,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:47,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:24:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:47,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:24:47,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670799669] [2020-09-25 13:24:47,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:24:47,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:24:47,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062311649] [2020-09-25 13:24:47,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:24:47,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:47,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:24:47,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:24:47,609 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 13:24:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:47,680 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 13:24:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:24:47,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:24:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:47,698 INFO L225 Difference]: With dead ends: 37 [2020-09-25 13:24:47,698 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 13:24:47,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:24:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 13:24:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 13:24:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 13:24:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 13:24:47,756 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 13:24:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:47,756 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 13:24:47,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:24:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 13:24:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 13:24:47,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:47,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:47,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:24:47,761 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:47,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:47,762 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 13:24:47,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:47,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298016759] [2020-09-25 13:24:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:24:48,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 13:24:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:24:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:24:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:24:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:48,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 13:24:48,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:24:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:24:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:24:48,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298016759] [2020-09-25 13:24:48,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:48,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:24:48,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508828775] [2020-09-25 13:24:48,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:24:48,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:48,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:24:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:24:48,403 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 13:24:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:48,468 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 13:24:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:24:48,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 13:24:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:48,471 INFO L225 Difference]: With dead ends: 31 [2020-09-25 13:24:48,471 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 13:24:48,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:24:48,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 13:24:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 13:24:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 13:24:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 13:24:48,481 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 13:24:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:48,481 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 13:24:48,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:24:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 13:24:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 13:24:48,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:48,483 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:48,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:24:48,484 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 13:24:48,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:48,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020008229] [2020-09-25 13:24:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:24:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 13:24:48,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:24:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 13:24:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:24:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:24:48,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 13:24:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:24:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:24:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:48,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:24:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:24:49,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020008229] [2020-09-25 13:24:49,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:49,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:24:49,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789687747] [2020-09-25 13:24:49,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:24:49,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:49,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:24:49,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:24:49,064 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 13:24:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:49,159 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 13:24:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:24:49,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 13:24:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:49,161 INFO L225 Difference]: With dead ends: 35 [2020-09-25 13:24:49,161 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 13:24:49,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:24:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 13:24:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 13:24:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 13:24:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 13:24:49,169 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 13:24:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:49,170 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 13:24:49,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:24:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 13:24:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 13:24:49,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:49,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:49,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:24:49,172 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 13:24:49,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:49,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396078916] [2020-09-25 13:24:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:24:49,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 13:24:49,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 13:24:49,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:24:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:49,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:24:49,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:24:49,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 13:24:49,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:24:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:24:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 13:24:49,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:24:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:49,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:24:49,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:49,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:24:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:49,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:24:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 13:24:50,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396078916] [2020-09-25 13:24:50,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:50,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:24:50,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003905669] [2020-09-25 13:24:50,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:24:50,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:24:50,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:24:50,050 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 13:24:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:50,205 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 13:24:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:24:50,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 13:24:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:50,209 INFO L225 Difference]: With dead ends: 39 [2020-09-25 13:24:50,209 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 13:24:50,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:24:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 13:24:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 13:24:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 13:24:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 13:24:50,221 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 13:24:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:50,221 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 13:24:50,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:24:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 13:24:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 13:24:50,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:50,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:50,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:24:50,225 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 13:24:50,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:50,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080559067] [2020-09-25 13:24:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:50,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:50,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:24:50,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:50,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 13:24:50,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:50,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:50,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:24:50,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 13:24:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:24:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:50,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:50,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:50,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:50,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:50,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:50,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:24:50,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 13:24:50,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:50,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:24:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:50,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:51,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:24:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 13:24:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:51,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:24:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:51,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:51,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:51,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:24:51,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:24:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:51,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:51,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:24:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:51,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:51,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:24:51,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:51,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:51,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:51,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:51,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:24:51,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:51,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:51,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:24:51,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080559067] [2020-09-25 13:24:51,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:51,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:24:51,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699001819] [2020-09-25 13:24:51,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:24:51,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:51,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:24:51,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:24:51,411 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 13:24:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:51,633 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 13:24:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:24:51,634 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 13:24:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:51,636 INFO L225 Difference]: With dead ends: 43 [2020-09-25 13:24:51,636 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 13:24:51,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:24:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 13:24:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 13:24:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 13:24:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 13:24:51,645 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 13:24:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:51,645 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 13:24:51,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:24:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 13:24:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:24:51,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:51,647 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:51,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:24:51,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 13:24:51,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:51,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130389420] [2020-09-25 13:24:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:52,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:52,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:24:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 13:24:52,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:52,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:24:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:24:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:24:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:52,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:52,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:24:52,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 13:24:52,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:52,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:24:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:52,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:52,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:24:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 13:24:52,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:52,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:52,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:24:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:52,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:24:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 13:24:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:52,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:24:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:53,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:53,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:24:53,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 13:24:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:53,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:24:53,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:24:53,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:24:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:53,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:53,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:53,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:53,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:24:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:53,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:53,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:24:53,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:53,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:53,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:24:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 13:24:53,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130389420] [2020-09-25 13:24:53,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:53,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:24:53,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686049517] [2020-09-25 13:24:53,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:24:53,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:53,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:24:53,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:24:53,381 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 13:24:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:53,650 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 13:24:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 13:24:53,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 13:24:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:53,652 INFO L225 Difference]: With dead ends: 47 [2020-09-25 13:24:53,652 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:24:53,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:24:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:24:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:24:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:24:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 13:24:53,660 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 13:24:53,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:53,660 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 13:24:53,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:24:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 13:24:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 13:24:53,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:53,662 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:53,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:24:53,662 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:53,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:53,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 13:24:53,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:53,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071626844] [2020-09-25 13:24:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:54,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:54,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:24:54,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:54,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-25 13:24:54,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:54,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:24:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 13:24:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:24:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:54,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:54,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:54,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:54,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:54,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:24:54,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 13:24:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:54,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:24:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:24:54,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:24:55,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 13:24:55,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:24:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:24:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 13:24:55,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:24:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:55,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:24:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 13:24:55,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:24:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:24:55,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 13:24:55,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:24:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:55,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:24:55,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:55,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:55,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:55,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:55,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:55,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:24:55,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:55,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:55,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 13:24:55,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071626844] [2020-09-25 13:24:55,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:55,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:24:55,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062746303] [2020-09-25 13:24:55,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:24:55,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:55,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:24:55,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:24:55,785 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 13:24:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:56,187 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 13:24:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 13:24:56,188 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 13:24:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:56,192 INFO L225 Difference]: With dead ends: 51 [2020-09-25 13:24:56,192 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 13:24:56,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:24:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 13:24:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 13:24:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 13:24:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 13:24:56,210 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 13:24:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:56,211 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 13:24:56,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:24:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 13:24:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:24:56,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:56,218 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:56,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:24:56,218 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 13:24:56,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:56,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785771324] [2020-09-25 13:24:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:24:56,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-09-25 13:24:56,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:24:56,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 13:24:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:24:56,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:56,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:24:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:57,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:24:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-25 13:24:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:57,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:24:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:24:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:57,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:57,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:24:57,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 13:24:57,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:57,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:24:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:24:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:58,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:58,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:58,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:24:58,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 13:24:58,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:58,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:24:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:24:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:58,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:58,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:24:58,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 13:24:58,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:58,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:24:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:24:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:24:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:24:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 13:24:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:58,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:24:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:24:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:58,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:58,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:58,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:24:58,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:24:58,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:58,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:24:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:58,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:24:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:59,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:24:59,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:24:59,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:59,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:24:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:59,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:24:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:59,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:24:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:24:59,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:59,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:24:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:24:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 13:24:59,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785771324] [2020-09-25 13:24:59,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:59,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:24:59,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522416252] [2020-09-25 13:24:59,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:24:59,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:24:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:24:59,159 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 13:24:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:59,527 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 13:24:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 13:24:59,528 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 13:24:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:59,529 INFO L225 Difference]: With dead ends: 55 [2020-09-25 13:24:59,529 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 13:24:59,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 13:24:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 13:24:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 13:24:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:24:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 13:24:59,544 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 13:24:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:59,546 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 13:24:59,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:24:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 13:24:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 13:24:59,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:59,549 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:59,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:24:59,550 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:59,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:59,551 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 13:24:59,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:59,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77749740] [2020-09-25 13:24:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:00,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:00,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 13:25:00,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-25 13:25:00,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:00,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:25:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:25:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:25:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:00,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:00,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:00,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:00,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:00,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:00,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:00,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:00,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:00,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:01,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:01,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:25:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-09-25 13:25:01,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:01,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:25:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:01,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:25:01,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:01,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:01,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:01,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:25:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-09-25 13:25:01,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:01,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:25:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:01,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:25:01,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:01,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:02,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:02,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:02,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 13:25:02,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:02,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:25:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:02,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:02,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:25:02,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 13:25:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:02,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:25:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:25:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:02,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:02,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:25:02,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 13:25:02,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:02,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:25:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:02,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:02,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:25:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 13:25:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:02,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:25:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:25:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:02,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:02,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:02,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:25:02,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:02,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:25:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:25:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:02,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:02,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:25:02,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:25:02,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:02,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:25:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:25:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:03,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:25:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 13:25:03,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77749740] [2020-09-25 13:25:03,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:25:03,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 13:25:03,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933057883] [2020-09-25 13:25:03,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 13:25:03,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:03,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 13:25:03,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:25:03,075 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 13:25:03,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:03,522 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 13:25:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 13:25:03,522 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 13:25:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:03,524 INFO L225 Difference]: With dead ends: 59 [2020-09-25 13:25:03,524 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 13:25:03,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 13:25:03,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 13:25:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 13:25:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:25:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 13:25:03,531 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 13:25:03,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:03,532 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 13:25:03,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 13:25:03,532 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 13:25:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 13:25:03,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:03,533 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:03,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:25:03,534 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:03,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 13:25:03,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:03,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192772320] [2020-09-25 13:25:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:04,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 13:25:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-09-25 13:25:04,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:04,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:25:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 13:25:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:04,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:04,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:04,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:04,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:25:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-09-25 13:25:05,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:05,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:25:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:25:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:06,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:06,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:25:06,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 13:25:06,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:06,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:25:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:25:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:06,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:06,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:25:06,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-25 13:25:06,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:06,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:25:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:06,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:25:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:06,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:06,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 13:25:06,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:06,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:25:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:07,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:07,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:25:07,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:07,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 13:25:07,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:07,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:25:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:25:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 13:25:07,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:07,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:25:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:07,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:07,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:25:07,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 13:25:07,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:07,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:25:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:25:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:07,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:07,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:07,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 13:25:07,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:07,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:25:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:25:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:07,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:25:07,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:25:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:07,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:07,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:07,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:07,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:25:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:25:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:07,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:25:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 13:25:07,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192772320] [2020-09-25 13:25:07,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:25:07,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 13:25:07,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294031299] [2020-09-25 13:25:07,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 13:25:07,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:07,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 13:25:07,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:25:07,985 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 13:25:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:08,554 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 13:25:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 13:25:08,555 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 13:25:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:08,556 INFO L225 Difference]: With dead ends: 63 [2020-09-25 13:25:08,556 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 13:25:08,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 13:25:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 13:25:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 13:25:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 13:25:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 13:25:08,564 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 13:25:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:08,564 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 13:25:08,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 13:25:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 13:25:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 13:25:08,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:08,566 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:08,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:25:08,566 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 13:25:08,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:08,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266781072] [2020-09-25 13:25:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:09,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 13:25:09,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:09,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-09-25 13:25:09,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:09,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 13:25:09,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 13:25:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:25:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:09,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:09,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:09,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:09,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:10,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:10,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:25:10,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-09-25 13:25:10,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:10,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:25:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:25:10,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:11,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:25:11,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:25:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:11,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:25:11,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-25 13:25:11,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:11,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:25:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:25:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:12,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:25:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:25:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:12,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:12,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:12,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 13:25:12,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:12,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:25:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:12,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:25:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 13:25:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:12,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:25:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:25:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:12,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:12,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:12,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:25:12,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 13:25:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:12,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:25:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:12,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:25:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 13:25:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:12,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:25:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:25:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:13,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:25:13,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:13,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:25:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:25:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:13,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:13,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:25:13,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:25:13,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:13,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:13,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:13,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:13,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:13,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:25:13,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:25:13,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:13,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:25:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 13:25:13,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266781072] [2020-09-25 13:25:13,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:25:13,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 13:25:13,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057809026] [2020-09-25 13:25:13,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 13:25:13,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:13,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 13:25:13,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:25:13,399 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-25 13:25:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:14,093 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 13:25:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 13:25:14,094 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-25 13:25:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:14,097 INFO L225 Difference]: With dead ends: 67 [2020-09-25 13:25:14,097 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 13:25:14,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 13:25:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 13:25:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 13:25:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 13:25:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 13:25:14,105 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-25 13:25:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:14,105 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 13:25:14,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 13:25:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 13:25:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 13:25:14,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:14,106 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:14,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:25:14,107 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:14,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-25 13:25:14,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:14,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530094952] [2020-09-25 13:25:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:14,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 13:25:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:25:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:15,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:15,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:15,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:15,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:15,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:16,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:16,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:25:16,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-09-25 13:25:16,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:16,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 13:25:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:25:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:16,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:25:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:16,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:25:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:17,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:17,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:25:17,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:17,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-09-25 13:25:17,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:17,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:17,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:25:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:25:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:18,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:18,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:25:18,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 13:25:18,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:18,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:25:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:25:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:18,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:18,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:25:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 13:25:18,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:18,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:25:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:25:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:18,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:25:18,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:18,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:19,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:19,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:25:19,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 13:25:19,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:19,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:25:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:25:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:19,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:19,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:25:19,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:19,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 13:25:19,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:19,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:19,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:25:19,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:19,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:25:19,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 13:25:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:25:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:25:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:19,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:19,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:19,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:19,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 13:25:19,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:19,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:25:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:25:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:19,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:19,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:25:19,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:25:19,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:19,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:19,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:19,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:25:19,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:25:19,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:19,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:25:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 13:25:19,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530094952] [2020-09-25 13:25:19,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:25:19,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 13:25:19,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588950356] [2020-09-25 13:25:19,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 13:25:19,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:19,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 13:25:19,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-25 13:25:19,945 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-25 13:25:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:20,785 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 13:25:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 13:25:20,786 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-25 13:25:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:20,787 INFO L225 Difference]: With dead ends: 71 [2020-09-25 13:25:20,787 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:25:20,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 13:25:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:25:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 13:25:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 13:25:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 13:25:20,795 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-25 13:25:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:20,796 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 13:25:20,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 13:25:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 13:25:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 13:25:20,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:20,797 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:20,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:25:20,797 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:20,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-25 13:25:20,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:20,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91311739] [2020-09-25 13:25:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:20,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:22,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:22,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 13:25:22,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-09-25 13:25:22,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:22,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 13:25:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 13:25:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 13:25:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:22,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:22,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:22,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:22,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:22,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:22,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:22,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:22,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:23,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:23,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 13:25:23,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-09-25 13:25:23,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:23,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:25:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:25:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:23,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:24,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:25:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-09-25 13:25:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:24,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 13:25:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:25:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:25,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:25,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:25:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:25,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:25,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:25:25,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-25 13:25:25,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:25,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:25:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:25:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:26,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:25:26,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-25 13:25:26,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:26,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:25:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:25:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:26,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:25:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 13:25:26,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:26,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:25:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:26,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:25:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:27,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:27,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:27,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:27,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 13:25:27,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:27,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:25:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:27,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:27,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:27,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:25:27,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 13:25:27,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:27,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:25:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:25:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:27,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:25:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 13:25:27,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:27,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:25:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:28,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:28,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:25:28,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 13:25:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:28,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:25:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:25:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:28,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:28,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:28,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:25:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:28,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:25:28,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:25:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:25:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:25:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:28,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:28,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:25:28,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:28,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:25:28,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:28,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:25:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-25 13:25:28,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91311739] [2020-09-25 13:25:28,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:25:28,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 13:25:28,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235399030] [2020-09-25 13:25:28,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 13:25:28,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:28,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 13:25:28,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-25 13:25:28,472 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-25 13:25:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:29,487 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-25 13:25:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 13:25:29,488 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-25 13:25:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:29,489 INFO L225 Difference]: With dead ends: 75 [2020-09-25 13:25:29,489 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 13:25:29,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 13:25:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 13:25:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 13:25:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 13:25:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 13:25:29,507 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-25 13:25:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:29,511 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 13:25:29,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 13:25:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 13:25:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 13:25:29,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:29,513 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:29,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:25:29,513 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:29,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-25 13:25:29,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:29,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726210461] [2020-09-25 13:25:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:31,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 13:25:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 13:25:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:25:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:31,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:31,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:31,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:32,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:32,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 13:25:32,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-09-25 13:25:32,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:32,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 13:25:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 13:25:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:32,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:33,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:25:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:25:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:25:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-25 13:25:34,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:34,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 13:25:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:25:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:35,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:35,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:25:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-09-25 13:25:35,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:35,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:25:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:25:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:25:36,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-25 13:25:36,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:36,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 13:25:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:25:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:36,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:36,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:25:36,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 13:25:36,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:36,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:25:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:25:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:25:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-25 13:25:37,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:25:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:25:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:37,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 13:25:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:25:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:25:37,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 13:25:37,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:25:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:25:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:25:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:25:37,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:25:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:25:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:38,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:25:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 13:25:38,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:38,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:25:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:25:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:38,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:38,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:38,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:25:38,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:38,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:25:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:25:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:38,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:25:38,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:25:38,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:38,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:38,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:25:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:38,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:25:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:25:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:38,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:38,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:25:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-25 13:25:38,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726210461] [2020-09-25 13:25:38,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:25:38,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 13:25:38,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78442403] [2020-09-25 13:25:38,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 13:25:38,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:38,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 13:25:38,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:25:38,624 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-25 13:25:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:39,651 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 13:25:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-25 13:25:39,652 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-25 13:25:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:39,653 INFO L225 Difference]: With dead ends: 79 [2020-09-25 13:25:39,654 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 13:25:39,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 13:25:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 13:25:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 13:25:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 13:25:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 13:25:39,662 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-25 13:25:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:39,662 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 13:25:39,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 13:25:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 13:25:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 13:25:39,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:39,664 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:39,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:25:39,664 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-25 13:25:39,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:39,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861252490] [2020-09-25 13:25:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 13:25:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-09-25 13:25:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 13:25:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 13:25:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:25:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:41,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:25:41,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:25:41,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:41,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 13:25:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...