/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/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:21:49,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:21:49,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:21:49,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:21:49,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:21:49,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:21:49,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:21:49,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:21:49,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:21:49,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:21:49,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:21:49,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:21:49,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:21:49,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:21:49,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:21:49,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:21:49,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:21:49,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:21:49,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:21:49,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:21:49,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:21:49,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:21:49,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:21:49,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:21:49,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:21:49,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:21:49,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:21:49,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:21:49,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:21:49,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:21:49,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:21:49,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:21:49,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:21:49,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:21:49,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:21:49,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:21:49,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:21:49,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:21:49,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:21:49,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:21:49,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:21:49,768 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 13:21:49,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:21:49,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:21:49,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:21:49,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:21:49,816 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:21:49,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:21:49,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:21:49,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:21:49,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:21:49,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:21:49,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:21:49,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:21:49,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:21:49,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:21:49,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:21:49,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:21:49,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:21:49,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:21:49,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:21:49,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:21:49,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:21:49,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:49,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:21:49,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:21:49,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:21:49,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:21:49,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:21:49,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:21:49,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:21:49,823 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 13:21:50,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:21:50,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:21:50,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:21:50,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:21:50,315 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:21:50,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 13:21:50,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c182cbbcf/a4be270f181c4ed8b92d59613f16ce10/FLAG9f5892022 [2020-09-25 13:21:50,871 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:21:50,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 13:21:50,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c182cbbcf/a4be270f181c4ed8b92d59613f16ce10/FLAG9f5892022 [2020-09-25 13:21:51,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c182cbbcf/a4be270f181c4ed8b92d59613f16ce10 [2020-09-25 13:21:51,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:21:51,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:21:51,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:51,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:21:51,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:21:51,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bcc4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51, skipping insertion in model container [2020-09-25 13:21:51,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:21:51,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:21:51,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:51,564 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:21:51,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:51,597 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:21:51,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51 WrapperNode [2020-09-25 13:21:51,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:51,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:21:51,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:21:51,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:21:51,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (1/1) ... [2020-09-25 13:21:51,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:21:51,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:21:51,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:21:51,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:21:51,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (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 13:21:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:21:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:21:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 13:21:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-25 13:21:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:21:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:21:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:21:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 13:21:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-25 13:21:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:21:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:21:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:52,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:52,035 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:21:52,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:52 BoogieIcfgContainer [2020-09-25 13:21:52,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:52,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:52,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:52,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:52,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:21:51" (1/3) ... [2020-09-25 13:21:52,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1961e4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:52, skipping insertion in model container [2020-09-25 13:21:52,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:51" (2/3) ... [2020-09-25 13:21:52,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1961e4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:52, skipping insertion in model container [2020-09-25 13:21:52,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:52" (3/3) ... [2020-09-25 13:21:52,052 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-25 13:21:52,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:52,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:52,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:52,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:52,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:52,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:52,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:52,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:52,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:52,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:52,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:21:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 13:21:52,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:52,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:52,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-25 13:21:52,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:52,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666975304] [2020-09-25 13:21:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:21:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-25 13:21:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:21:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:21:52,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:21:52,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:21:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:21:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:21:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 13:21:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:53,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:21:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:21:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:53,056 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 13:21:53,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666975304] [2020-09-25 13:21:53,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:53,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:21:53,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486649518] [2020-09-25 13:21:53,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:21:53,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:53,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:21:53,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:53,087 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 6 states. [2020-09-25 13:21:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:53,276 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-09-25 13:21:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:21:53,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 13:21:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:53,291 INFO L225 Difference]: With dead ends: 70 [2020-09-25 13:21:53,292 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 13:21:53,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 13:21:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 13:21:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 13:21:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-25 13:21:53,356 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 29 [2020-09-25 13:21:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:53,356 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-25 13:21:53,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:21:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-25 13:21:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 13:21:53,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:53,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:53,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:53,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:53,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-25 13:21:53,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:53,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289271970] [2020-09-25 13:21:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:21:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 13:21:53,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:21:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:21:53,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:21:53,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:21:53,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:53,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:53,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:21:54,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:54,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 13:21:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:21:54,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:21:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:21:54,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:21:54,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:21:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:21:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:54,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:21:54,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:21:54,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:21:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:21:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:21:54,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:54,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:54,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:21:54,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289271970] [2020-09-25 13:21:54,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:54,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:21:54,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522463993] [2020-09-25 13:21:54,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:21:54,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:54,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:21:54,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:21:54,387 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-25 13:21:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:54,981 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-25 13:21:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:21:54,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 13:21:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:54,986 INFO L225 Difference]: With dead ends: 93 [2020-09-25 13:21:54,986 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 13:21:54,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:21:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 13:21:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-25 13:21:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 13:21:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-25 13:21:55,007 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-25 13:21:55,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:55,008 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-25 13:21:55,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:21:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-25 13:21:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:21:55,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:55,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:55,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:55,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-25 13:21:55,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:55,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126418492] [2020-09-25 13:21:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:21:57,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:21:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-09-25 13:21:57,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:21:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:21:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:21:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:21:57,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:57,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:57,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:57,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:21:57,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 13:21:57,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:21:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:21:57,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:21:57,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:21:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:21:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:21:57,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:21:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:21:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:21:57,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 13:21:57,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:21:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:21:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:21:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:57,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:21:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:21:57,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126418492] [2020-09-25 13:21:57,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:57,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:21:57,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198049083] [2020-09-25 13:21:57,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:21:57,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:57,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:21:57,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:21:57,586 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 10 states. [2020-09-25 13:21:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:57,869 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2020-09-25 13:21:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:21:57,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-09-25 13:21:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:57,872 INFO L225 Difference]: With dead ends: 129 [2020-09-25 13:21:57,873 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 13:21:57,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:21:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 13:21:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-25 13:21:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 13:21:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-09-25 13:21:57,889 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 56 [2020-09-25 13:21:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:57,889 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-09-25 13:21:57,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:21:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-09-25 13:21:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:21:57,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:57,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:57,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:21:57,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:57,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-25 13:21:57,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:57,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870107216] [2020-09-25 13:21:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 13:22:02,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:22:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4990 [2020-09-25 13:22:02,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 13:22:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:22:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:22:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:02,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:02,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:02,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 13:22:03,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-25 13:22:03,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:22:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:22:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:03,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 13:22:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:22:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:03,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:22:03,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:03,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:22:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:22:03,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:03,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 13:22:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:03,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:03,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 13:22:03,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:03,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 13:22:03,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870107216] [2020-09-25 13:22:03,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:03,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:22:03,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450789545] [2020-09-25 13:22:03,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:22:03,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:03,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:22:03,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:22:03,962 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 8 states. [2020-09-25 13:22:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:04,243 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2020-09-25 13:22:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:22:04,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 13:22:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:04,245 INFO L225 Difference]: With dead ends: 113 [2020-09-25 13:22:04,245 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 13:22:04,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:22:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 13:22:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-09-25 13:22:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 13:22:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-09-25 13:22:04,268 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 67 [2020-09-25 13:22:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:04,268 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-09-25 13:22:04,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:22:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-09-25 13:22:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 13:22:04,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:04,270 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:04,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:22:04,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:04,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1835668384, now seen corresponding path program 3 times [2020-09-25 13:22:04,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:04,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243715583] [2020-09-25 13:22:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:04,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 13:22:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:22:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:22:09,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:09,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:22:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:22:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:09,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:22:09,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:09,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:09,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:09,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:09,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:22:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:22:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:22:14,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:22:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:14,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:14,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:22:14,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:22:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:14,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:14,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:14,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:22:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:14,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-25 13:22:14,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:22:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:14,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:14,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:22:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:14,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:14,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:14,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 38 proven. 39 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 13:22:14,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243715583] [2020-09-25 13:22:14,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:14,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:22:14,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158647952] [2020-09-25 13:22:14,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:22:14,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:14,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:22:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:14,987 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 9 states. [2020-09-25 13:22:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:15,213 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-09-25 13:22:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:22:15,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 13:22:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:15,215 INFO L225 Difference]: With dead ends: 76 [2020-09-25 13:22:15,215 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 13:22:15,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:22:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 13:22:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2020-09-25 13:22:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 13:22:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-25 13:22:15,224 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 86 [2020-09-25 13:22:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:15,225 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-25 13:22:15,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:22:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-25 13:22:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 13:22:15,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:15,227 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:15,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:22:15,227 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:15,228 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-25 13:22:15,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:15,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521725793] [2020-09-25 13:22:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:16,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 13:22:16,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-09-25 13:22:16,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:16,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:22:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:22:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 13:22:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:16,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:22:16,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:16,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:16,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:16,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:16,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:16,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:16,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:22:16,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-25 13:22:16,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:16,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:22:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:22:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:17,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 13:22:17,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:22:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:17,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:22:17,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:22:17,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:22:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:22:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:17,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 13:22:17,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:17,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:17,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:22:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:22:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:17,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:22:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 13:22:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:22:17,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:22:17,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:22:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:22:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:17,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:22:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:22:17,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-25 13:22:17,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521725793] [2020-09-25 13:22:17,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:17,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:22:17,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862588210] [2020-09-25 13:22:17,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:22:17,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:17,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:22:17,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:22:17,478 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 15 states. [2020-09-25 13:22:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:18,063 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-25 13:22:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 13:22:18,064 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-09-25 13:22:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:18,065 INFO L225 Difference]: With dead ends: 102 [2020-09-25 13:22:18,066 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 13:22:18,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:22:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 13:22:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-25 13:22:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 13:22:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-25 13:22:18,081 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-25 13:22:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:18,083 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-25 13:22:18,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:22:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-25 13:22:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:22:18,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:18,086 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:18,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:18,086 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:18,090 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-25 13:22:18,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:18,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514930704] [2020-09-25 13:22:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:22:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:22:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 13:22:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:22:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:23,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:22:23,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:23,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:23,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 13:22:28,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:22:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:22:28,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:22:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:22:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:28,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 13:22:28,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:22:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:22:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:22:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:22:33,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:22:33,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:22:33,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:33,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:33,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:22:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:22:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:34,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:34,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:34,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:34,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:22:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:22:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:22:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:22:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:34,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:34,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:22:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 13:22:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:22:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:34,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 76 proven. 158 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-09-25 13:22:34,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514930704] [2020-09-25 13:22:34,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:34,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:22:34,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405047632] [2020-09-25 13:22:34,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:22:34,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:34,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:22:34,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:34,179 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 9 states. [2020-09-25 13:22:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:34,519 INFO L93 Difference]: Finished difference Result 154 states and 191 transitions. [2020-09-25 13:22:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:22:34,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 13:22:34,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:34,522 INFO L225 Difference]: With dead ends: 154 [2020-09-25 13:22:34,522 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 13:22:34,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:22:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 13:22:34,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-09-25 13:22:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 13:22:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-09-25 13:22:34,535 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 132 [2020-09-25 13:22:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:34,536 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-09-25 13:22:34,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:22:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-09-25 13:22:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 13:22:34,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:34,537 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:34,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:22:34,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1860925472, now seen corresponding path program 4 times [2020-09-25 13:22:34,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:34,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469444506] [2020-09-25 13:22:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:35,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 13:22:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:22:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:22:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:22:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 13:22:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:39,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 13:22:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking...