/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:41,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:41,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:41,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:41,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:41,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:41,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:41,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:41,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:41,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:41,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:41,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:41,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:41,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:41,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:41,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:41,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:41,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:41,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:41,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:41,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:41,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:41,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:41,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:41,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:41,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:41,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:41,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:41,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:41,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:41,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:41,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:41,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:41,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:41,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:41,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:41,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:41,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:41,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:41,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:41,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:41,621 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 [2020-09-24 18:24:41,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:41,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:41,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:41,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:41,659 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:41,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:41,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:41,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:41,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:41,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:41,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:41,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:41,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:41,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:41,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:41,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:41,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:41,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:41,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:41,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:41,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:41,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:41,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:41,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:41,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:41,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:41,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:41,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:41,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:41,664 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:42,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:42,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:42,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:42,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:42,165 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:42,166 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-24 18:24:42,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aa3be109/69bc82e3e44d4801895f3bc88b20cbb8/FLAGf0ebf43c7 [2020-09-24 18:24:42,897 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:42,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-24 18:24:42,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aa3be109/69bc82e3e44d4801895f3bc88b20cbb8/FLAGf0ebf43c7 [2020-09-24 18:24:43,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aa3be109/69bc82e3e44d4801895f3bc88b20cbb8 [2020-09-24 18:24:43,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:43,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:43,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:43,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:43,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:43,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:43" (1/1) ... [2020-09-24 18:24:43,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:43, skipping insertion in model container [2020-09-24 18:24:43,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:43" (1/1) ... [2020-09-24 18:24:43,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:43,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:43,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:43,804 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:44,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:44,070 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:44,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44 WrapperNode [2020-09-24 18:24:44,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:44,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:44,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:44,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:44,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (1/1) ... [2020-09-24 18:24:44,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:44,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:44,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:44,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:44,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (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 [2020-09-24 18:24:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:45,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:45,845 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:45,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:45 BoogieIcfgContainer [2020-09-24 18:24:45,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:45,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:45,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:45,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:45,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:43" (1/3) ... [2020-09-24 18:24:45,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e1548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:45, skipping insertion in model container [2020-09-24 18:24:45,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:44" (2/3) ... [2020-09-24 18:24:45,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151e1548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:45, skipping insertion in model container [2020-09-24 18:24:45,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:45" (3/3) ... [2020-09-24 18:24:45,865 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-24 18:24:45,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:45,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:45,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:45,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:45,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:45,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:45,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:45,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:45,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:45,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:45,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:24:46,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:46,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:46,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:46,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-24 18:24:46,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:46,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945193443] [2020-09-24 18:24:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:46,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:47,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:47,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:24:47,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:24:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-09-24 18:24:47,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:47,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:24:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 18:24:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:47,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:47,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:47,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:24:47,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:24:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:47,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945193443] [2020-09-24 18:24:47,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:47,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:47,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466993777] [2020-09-24 18:24:47,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:47,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:47,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:47,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:47,445 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:49,734 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 18:24:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:49,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 18:24:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:49,760 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 18:24:49,761 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 18:24:49,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 18:24:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 18:24:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 18:24:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 18:24:49,884 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-24 18:24:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:49,885 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 18:24:49,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 18:24:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 18:24:49,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:49,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:49,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:49,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:49,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-24 18:24:49,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:49,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476716165] [2020-09-24 18:24:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:50,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:24:54,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:24:54,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:24:54,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-24 18:24:54,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:24:54,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:55,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:55,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:55,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:55,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:24:55,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 18:24:55,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:24:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:55,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476716165] [2020-09-24 18:24:55,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:55,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:24:55,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212478783] [2020-09-24 18:24:55,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:24:55,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:55,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:24:55,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:55,242 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 6 states. [2020-09-24 18:24:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:57,900 INFO L93 Difference]: Finished difference Result 1785 states and 2367 transitions. [2020-09-24 18:24:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:24:57,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-09-24 18:24:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:57,911 INFO L225 Difference]: With dead ends: 1785 [2020-09-24 18:24:57,912 INFO L226 Difference]: Without dead ends: 1224 [2020-09-24 18:24:57,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-09-24 18:24:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1184. [2020-09-24 18:24:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-09-24 18:24:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1510 transitions. [2020-09-24 18:24:57,986 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1510 transitions. Word has length 129 [2020-09-24 18:24:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:57,989 INFO L479 AbstractCegarLoop]: Abstraction has 1184 states and 1510 transitions. [2020-09-24 18:24:57,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:24:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1510 transitions. [2020-09-24 18:24:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 18:24:58,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:58,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:58,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:58,005 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:58,006 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-24 18:24:58,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:58,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236227524] [2020-09-24 18:24:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:58,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:59,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:24:59,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:59,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949 [2020-09-24 18:24:59,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:59,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:59,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 18:24:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:24:59,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:00,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:25:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:00,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 18:25:00,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:25:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:00,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236227524] [2020-09-24 18:25:00,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:00,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:00,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871912967] [2020-09-24 18:25:00,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:00,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:00,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:00,296 INFO L87 Difference]: Start difference. First operand 1184 states and 1510 transitions. Second operand 5 states. [2020-09-24 18:25:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:02,094 INFO L93 Difference]: Finished difference Result 3263 states and 4311 transitions. [2020-09-24 18:25:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:02,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-24 18:25:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:02,113 INFO L225 Difference]: With dead ends: 3263 [2020-09-24 18:25:02,114 INFO L226 Difference]: Without dead ends: 2094 [2020-09-24 18:25:02,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-09-24 18:25:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1944. [2020-09-24 18:25:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-09-24 18:25:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2541 transitions. [2020-09-24 18:25:02,200 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2541 transitions. Word has length 129 [2020-09-24 18:25:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:02,202 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2541 transitions. [2020-09-24 18:25:02,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2541 transitions. [2020-09-24 18:25:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 18:25:02,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:02,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:02,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:02,214 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:02,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1743030617, now seen corresponding path program 1 times [2020-09-24 18:25:02,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:02,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197186844] [2020-09-24 18:25:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:06,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 18:25:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:25:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4548 [2020-09-24 18:25:06,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:06,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-24 18:25:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:25:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:06,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:25:06,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:06,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:07,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 18:25:07,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 18:25:07,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:25:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:07,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197186844] [2020-09-24 18:25:07,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:07,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:07,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133226925] [2020-09-24 18:25:07,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:07,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:07,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:07,145 INFO L87 Difference]: Start difference. First operand 1944 states and 2541 transitions. Second operand 5 states. [2020-09-24 18:25:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:09,345 INFO L93 Difference]: Finished difference Result 4657 states and 6258 transitions. [2020-09-24 18:25:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:09,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-24 18:25:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:09,371 INFO L225 Difference]: With dead ends: 4657 [2020-09-24 18:25:09,371 INFO L226 Difference]: Without dead ends: 2878 [2020-09-24 18:25:09,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-09-24 18:25:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2557. [2020-09-24 18:25:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states. [2020-09-24 18:25:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3311 transitions. [2020-09-24 18:25:09,461 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3311 transitions. Word has length 168 [2020-09-24 18:25:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:09,462 INFO L479 AbstractCegarLoop]: Abstraction has 2557 states and 3311 transitions. [2020-09-24 18:25:09,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3311 transitions. [2020-09-24 18:25:09,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 18:25:09,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:09,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:09,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:09,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:09,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1615501736, now seen corresponding path program 1 times [2020-09-24 18:25:09,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:09,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066015449] [2020-09-24 18:25:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:09,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:13,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 18:25:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:25:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3764 [2020-09-24 18:25:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-24 18:25:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:25:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:13,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:13,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:25:13,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:13,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:13,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 18:25:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 18:25:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:25:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:13,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066015449] [2020-09-24 18:25:13,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:13,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:13,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741819337] [2020-09-24 18:25:13,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:13,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:13,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:13,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:13,663 INFO L87 Difference]: Start difference. First operand 2557 states and 3311 transitions. Second operand 5 states. [2020-09-24 18:25:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:15,719 INFO L93 Difference]: Finished difference Result 5707 states and 7479 transitions. [2020-09-24 18:25:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:15,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-24 18:25:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:15,732 INFO L225 Difference]: With dead ends: 5707 [2020-09-24 18:25:15,732 INFO L226 Difference]: Without dead ends: 2365 [2020-09-24 18:25:15,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-09-24 18:25:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2365. [2020-09-24 18:25:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-09-24 18:25:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3000 transitions. [2020-09-24 18:25:15,811 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3000 transitions. Word has length 173 [2020-09-24 18:25:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:15,811 INFO L479 AbstractCegarLoop]: Abstraction has 2365 states and 3000 transitions. [2020-09-24 18:25:15,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3000 transitions. [2020-09-24 18:25:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-24 18:25:15,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:15,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:15,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:15,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1077619407, now seen corresponding path program 1 times [2020-09-24 18:25:15,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:15,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631469597] [2020-09-24 18:25:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:20,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 18:25:20,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:25:20,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-09-24 18:25:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:25:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:20,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:20,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:20,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:20,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:20,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:20,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:25:20,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:25:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:21,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 18:25:21,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 18:25:21,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 18:25:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 18:25:21,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631469597] [2020-09-24 18:25:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:21,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:21,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51890282] [2020-09-24 18:25:21,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:21,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:21,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:21,205 INFO L87 Difference]: Start difference. First operand 2365 states and 3000 transitions. Second operand 5 states. [2020-09-24 18:25:23,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:23,078 INFO L93 Difference]: Finished difference Result 5173 states and 6692 transitions. [2020-09-24 18:25:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:23,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-09-24 18:25:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:23,098 INFO L225 Difference]: With dead ends: 5173 [2020-09-24 18:25:23,098 INFO L226 Difference]: Without dead ends: 2973 [2020-09-24 18:25:23,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-09-24 18:25:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2973. [2020-09-24 18:25:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-09-24 18:25:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3675 transitions. [2020-09-24 18:25:23,211 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3675 transitions. Word has length 220 [2020-09-24 18:25:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:23,212 INFO L479 AbstractCegarLoop]: Abstraction has 2973 states and 3675 transitions. [2020-09-24 18:25:23,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3675 transitions. [2020-09-24 18:25:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-09-24 18:25:23,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:23,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:23,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:25:23,236 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -101866954, now seen corresponding path program 1 times [2020-09-24 18:25:23,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:23,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545649517] [2020-09-24 18:25:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 18:25:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:28,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:25:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 18:25:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:25:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 18:25:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:28,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 18:25:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-24 18:25:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:28,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:28,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 18:25:28,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 18:25:28,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:28,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 18:25:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 177 proven. 80 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 18:25:28,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545649517] [2020-09-24 18:25:28,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:28,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:28,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224107006] [2020-09-24 18:25:28,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:28,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:28,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:28,844 INFO L87 Difference]: Start difference. First operand 2973 states and 3675 transitions. Second operand 7 states. [2020-09-24 18:25:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:31,080 INFO L93 Difference]: Finished difference Result 5831 states and 7242 transitions. [2020-09-24 18:25:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:25:31,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-09-24 18:25:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:31,093 INFO L225 Difference]: With dead ends: 5831 [2020-09-24 18:25:31,094 INFO L226 Difference]: Without dead ends: 3023 [2020-09-24 18:25:31,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:25:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-09-24 18:25:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2843. [2020-09-24 18:25:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2843 states. [2020-09-24 18:25:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 3305 transitions. [2020-09-24 18:25:31,169 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 3305 transitions. Word has length 356 [2020-09-24 18:25:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:31,170 INFO L479 AbstractCegarLoop]: Abstraction has 2843 states and 3305 transitions. [2020-09-24 18:25:31,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 3305 transitions. [2020-09-24 18:25:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-09-24 18:25:31,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:31,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:31,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:25:31,183 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:31,184 INFO L82 PathProgramCache]: Analyzing trace with hash -617098313, now seen corresponding path program 1 times [2020-09-24 18:25:31,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:31,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187010960] [2020-09-24 18:25:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:31,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking...