/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:15,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:15,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:15,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:15,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:15,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:15,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:15,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:15,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:15,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:15,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:15,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:15,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:15,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:15,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:15,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:15,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:15,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:15,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:15,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:15,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:15,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:15,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:15,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:15,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:15,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:15,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:15,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:15,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:15,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:15,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:15,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:15,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:15,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:15,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:15,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:15,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:15,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:15,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:15,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:15,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:15,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:10:15,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:15,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:15,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:15,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:15,692 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:15,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:15,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:15,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:15,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:15,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:15,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:15,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:15,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:15,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:15,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:15,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:15,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:15,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:15,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:15,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:15,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:15,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:15,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:15,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:15,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:15,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:15,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:15,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:15,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:15,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:10:16,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:16,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:16,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:16,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:16,189 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:16,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 03:10:16,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866b85b5a/7e6a676050924bc98b89bfe3b5e2d1af/FLAGdfa0de32e [2020-09-25 03:10:16,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:16,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 03:10:16,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866b85b5a/7e6a676050924bc98b89bfe3b5e2d1af/FLAGdfa0de32e [2020-09-25 03:10:17,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/866b85b5a/7e6a676050924bc98b89bfe3b5e2d1af [2020-09-25 03:10:17,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:17,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:17,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:17,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:17,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:17,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17, skipping insertion in model container [2020-09-25 03:10:17,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:17,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:17,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:17,395 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:17,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:17,427 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:17,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17 WrapperNode [2020-09-25 03:10:17,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:17,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:17,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:17,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:17,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... [2020-09-25 03:10:17,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:17,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:17,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:17,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:17,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 03:10:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 03:10:17,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 03:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 03:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:17,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:17,855 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:17,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:17 BoogieIcfgContainer [2020-09-25 03:10:17,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:17,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:17,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:17,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:17,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:17" (1/3) ... [2020-09-25 03:10:17,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:17, skipping insertion in model container [2020-09-25 03:10:17,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:17" (2/3) ... [2020-09-25 03:10:17,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:17, skipping insertion in model container [2020-09-25 03:10:17,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:17" (3/3) ... [2020-09-25 03:10:17,871 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-25 03:10:17,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:17,895 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:17,921 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:17,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:17,958 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:17,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:17,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:17,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:17,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:17,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:17,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 03:10:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:17,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:17,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:17,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 03:10:18,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:18,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 03:10:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:18,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:18,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 03:10:18,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:10:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:18,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:18,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:18,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 03:10:18,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:18,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:18,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632626389] [2020-09-25 03:10:18,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:18,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:18,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:18,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:18,511 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 03:10:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:18,602 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:10:18,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:18,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:18,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:18,618 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:18,619 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:10:18,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:10:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 03:10:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:18,680 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 03:10:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:18,680 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:18,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:18,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:18,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:18,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:18,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:18,685 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 03:10:18,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:18,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950237946] [2020-09-25 03:10:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:18,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:18,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 03:10:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:10:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:18,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 03:10:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:18,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:18,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:18,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:18,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:18,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 03:10:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:18,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:18,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950237946] [2020-09-25 03:10:18,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:18,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:18,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824210414] [2020-09-25 03:10:18,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:18,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:18,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:18,973 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 03:10:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:19,020 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 03:10:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:19,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:19,023 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:19,023 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:19,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 03:10:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:19,035 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 03:10:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:19,035 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:19,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:19,040 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:10:19,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:19,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 03:10:19,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:19,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079841503] [2020-09-25 03:10:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:20,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-09-25 03:10:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:20,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:21,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:21,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 03:10:21,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:10:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:21,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:21,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:21,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:21,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:10:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:21,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:21,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:10:21,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 03:10:21,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079841503] [2020-09-25 03:10:21,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:21,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:21,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526275285] [2020-09-25 03:10:21,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:21,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:21,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:21,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:21,497 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 03:10:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:21,671 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-25 03:10:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:21,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 03:10:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:21,681 INFO L225 Difference]: With dead ends: 63 [2020-09-25 03:10:21,682 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 03:10:21,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 03:10:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 03:10:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:21,712 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 03:10:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:21,713 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:21,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:21,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:21,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:21,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:21,718 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 03:10:21,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:21,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688462735] [2020-09-25 03:10:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:24,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:24,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3107 [2020-09-25 03:10:24,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:24,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:24,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:25,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:25,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-09-25 03:10:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:25,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:25,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:25,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:25,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:25,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:25,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:25,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:10:25,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:10:25,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688462735] [2020-09-25 03:10:25,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:25,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:25,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931868365] [2020-09-25 03:10:25,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:25,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:25,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:25,856 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 03:10:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:25,993 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-09-25 03:10:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:25,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 03:10:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:26,002 INFO L225 Difference]: With dead ends: 67 [2020-09-25 03:10:26,002 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 03:10:26,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:26,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 03:10:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2020-09-25 03:10:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:10:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 03:10:26,021 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 03:10:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:26,025 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 03:10:26,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 03:10:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:26,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:26,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:26,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:26,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 03:10:26,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:26,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135254897] [2020-09-25 03:10:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:26,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:26,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-25 03:10:26,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:26,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:26,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:26,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:26,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:26,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:27,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:27,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 03:10:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:27,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:27,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:27,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:27,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:27,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:27,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:27,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:27,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135254897] [2020-09-25 03:10:27,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:27,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:27,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976601374] [2020-09-25 03:10:27,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:27,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:27,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:27,282 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 03:10:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:27,386 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 03:10:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:27,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 03:10:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:27,389 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:10:27,389 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:10:27,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:10:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:10:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:27,399 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2020-09-25 03:10:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:27,399 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:27,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:27,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:27,402 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:10:27,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:27,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 03:10:27,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:27,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152351801] [2020-09-25 03:10:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:28,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:28,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-09-25 03:10:28,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:28,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:29,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:29,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-25 03:10:29,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:29,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:29,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:29,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:10:29,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:10:29,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152351801] [2020-09-25 03:10:29,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:29,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:29,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983473877] [2020-09-25 03:10:29,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:29,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:29,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:29,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:29,418 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 03:10:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:29,507 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-09-25 03:10:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:29,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:10:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:29,509 INFO L225 Difference]: With dead ends: 78 [2020-09-25 03:10:29,509 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 03:10:29,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 03:10:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2020-09-25 03:10:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 03:10:29,519 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 03:10:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:29,520 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 03:10:29,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 03:10:29,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:29,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:29,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:29,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:29,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:29,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:29,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 03:10:29,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:29,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031381808] [2020-09-25 03:10:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:34,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:10:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:34,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:34,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-09-25 03:10:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:10:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:36,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:36,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 03:10:36,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:36,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:36,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:36,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:36,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:36,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:36,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:36,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:36,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:10:36,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031381808] [2020-09-25 03:10:36,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:36,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:10:36,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036026342] [2020-09-25 03:10:36,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:10:36,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:10:36,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:36,393 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 12 states. [2020-09-25 03:10:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:36,577 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2020-09-25 03:10:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:10:36,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-25 03:10:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:36,579 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:10:36,579 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 03:10:36,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 03:10:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2020-09-25 03:10:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 03:10:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2020-09-25 03:10:36,591 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 51 [2020-09-25 03:10:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:36,592 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2020-09-25 03:10:36,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:10:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2020-09-25 03:10:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:36,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:36,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:10:36,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:10:36,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash -991775051, now seen corresponding path program 1 times [2020-09-25 03:10:36,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:36,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440171694] [2020-09-25 03:10:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:41,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:10:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:41,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:41,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:41,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:41,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:41,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:41,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:45,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:45,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3508 [2020-09-25 03:10:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:45,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:45,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:45,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:45,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:45,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 03:10:45,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:45,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:45,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:45,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:45,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:45,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:45,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:10:45,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440171694] [2020-09-25 03:10:45,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:45,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:45,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317203440] [2020-09-25 03:10:45,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:45,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:45,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:45,837 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand 13 states. [2020-09-25 03:10:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:46,017 INFO L93 Difference]: Finished difference Result 104 states and 145 transitions. [2020-09-25 03:10:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:10:46,017 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 03:10:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:46,019 INFO L225 Difference]: With dead ends: 104 [2020-09-25 03:10:46,019 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 03:10:46,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:10:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 03:10:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2020-09-25 03:10:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 03:10:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2020-09-25 03:10:46,032 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 52 [2020-09-25 03:10:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:46,032 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2020-09-25 03:10:46,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2020-09-25 03:10:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:46,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:46,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:10:46,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:46,034 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:46,035 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 2 times [2020-09-25 03:10:46,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:46,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261608698] [2020-09-25 03:10:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:48,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:48,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2214 [2020-09-25 03:10:48,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:48,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:49,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-25 03:10:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:49,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 03:10:49,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:49,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:49,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:49,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:49,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:10:49,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261608698] [2020-09-25 03:10:49,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:49,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:49,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862397398] [2020-09-25 03:10:49,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:49,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:49,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:49,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:49,431 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand 13 states. [2020-09-25 03:10:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:49,627 INFO L93 Difference]: Finished difference Result 110 states and 156 transitions. [2020-09-25 03:10:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:10:49,628 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 03:10:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:49,629 INFO L225 Difference]: With dead ends: 110 [2020-09-25 03:10:49,630 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 03:10:49,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 03:10:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 76. [2020-09-25 03:10:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:10:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2020-09-25 03:10:49,640 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 52 [2020-09-25 03:10:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:49,640 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2020-09-25 03:10:49,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2020-09-25 03:10:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:10:49,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:49,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-25 03:10:49,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:10:49,642 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:49,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1855729211, now seen corresponding path program 1 times [2020-09-25 03:10:49,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:49,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102695537] [2020-09-25 03:10:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:10:54,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:10:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4775 [2020-09-25 03:10:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 03:10:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:54,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:54,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2560 [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:57,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:10:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:57,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:57,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 03:10:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:10:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:57,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:10:57,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:10:57,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:10:57,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102695537] [2020-09-25 03:10:57,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:57,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:10:57,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245516860] [2020-09-25 03:10:57,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:10:57,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:57,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:10:57,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:57,343 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand 11 states. [2020-09-25 03:10:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:57,521 INFO L93 Difference]: Finished difference Result 106 states and 156 transitions. [2020-09-25 03:10:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:10:57,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 03:10:57,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:57,524 INFO L225 Difference]: With dead ends: 106 [2020-09-25 03:10:57,524 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 03:10:57,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:10:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 03:10:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-09-25 03:10:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 03:10:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 132 transitions. [2020-09-25 03:10:57,540 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 132 transitions. Word has length 53 [2020-09-25 03:10:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:57,543 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 132 transitions. [2020-09-25 03:10:57,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:10:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 132 transitions. [2020-09-25 03:10:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:10:57,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:57,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:57,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:10:57,546 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash 698933285, now seen corresponding path program 1 times [2020-09-25 03:10:57,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:57,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077617778] [2020-09-25 03:10:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:11:02,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:11:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:11:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:02,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:11:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:11:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3596 [2020-09-25 03:11:06,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:11:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:07,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:11:07,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-09-25 03:11:07,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:11:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:11:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:08,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:11:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:08,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:08,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:08,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:11:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:08,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 03:11:08,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077617778] [2020-09-25 03:11:08,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:08,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:11:08,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463484412] [2020-09-25 03:11:08,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:11:08,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:11:08,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:11:08,046 INFO L87 Difference]: Start difference. First operand 88 states and 132 transitions. Second operand 10 states. [2020-09-25 03:11:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:08,278 INFO L93 Difference]: Finished difference Result 126 states and 194 transitions. [2020-09-25 03:11:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:11:08,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 03:11:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:08,281 INFO L225 Difference]: With dead ends: 126 [2020-09-25 03:11:08,281 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 03:11:08,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:11:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 03:11:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-09-25 03:11:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 03:11:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 168 transitions. [2020-09-25 03:11:08,295 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 168 transitions. Word has length 69 [2020-09-25 03:11:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:08,295 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 168 transitions. [2020-09-25 03:11:08,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:11:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 168 transitions. [2020-09-25 03:11:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 03:11:08,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:08,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:08,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:11:08,298 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:08,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1277679918, now seen corresponding path program 2 times [2020-09-25 03:11:08,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:08,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855944193] [2020-09-25 03:11:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 03:11:13,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:11:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 03:11:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:13,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:13,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking...